diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5df6a68e5..00a857474 100755
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -340,6 +340,7 @@ set(APP_FORMS
   src/gui/formsettings.ui
   src/gui/formwelcome.ui
   src/gui/formabout.ui
+  src/gui/formcategorydetails.ui
 )
 
 # Add resources.
diff --git a/resources/graphics/icons/mini-kfaenza/folder-red.png b/resources/graphics/icons/mini-kfaenza/folder-red.png
new file mode 100644
index 000000000..2d46b788a
Binary files /dev/null and b/resources/graphics/icons/mini-kfaenza/folder-red.png differ
diff --git a/src/core/feedsmodel.cpp b/src/core/feedsmodel.cpp
index eefa4c89d..2539fc9dd 100644
--- a/src/core/feedsmodel.cpp
+++ b/src/core/feedsmodel.cpp
@@ -20,7 +20,9 @@ FeedsModel::FeedsModel(QObject *parent) : QAbstractItemModel(parent) {
   setObjectName("FeedsModel");
 
   m_rootItem = new FeedsModelRootItem();
+  m_rootItem->setId(NO_PARENT_CATEGORY);
   m_rootItem->setTitle(tr("root"));
+  m_rootItem->setIcon(IconThemeFactory::getInstance()->fromTheme("folder-red"));
 
   m_countsIcon = IconThemeFactory::getInstance()->fromTheme("mail-mark-unread");
 
@@ -29,32 +31,6 @@ FeedsModel::FeedsModel(QObject *parent) : QAbstractItemModel(parent) {
                    tr("Counts of unread/all meesages.");
 
   loadFromDatabase();
-
-  /*
-  FeedsModelStandardCategory *cat1 = new FeedsModelStandardCategory();
-  FeedsModelStandardCategory *cat2 = new FeedsModelStandardCategory();
-  FeedsModelStandardFeed *feed1 = new FeedsModelStandardFeed();
-  FeedsModelStandardFeed *feed2 = new FeedsModelStandardFeed();
-  FeedsModelStandardFeed *feed3 = new FeedsModelStandardFeed();
-  FeedsModelStandardFeed *feed4 = new FeedsModelStandardFeed();
-  FeedsModelStandardFeed *feed5 = new FeedsModelStandardFeed();
-
-  feed1->setTitle("aaa");
-  feed2->setTitle("aaa");
-  feed3->setTitle("aaa");
-  feed4->setTitle("aaa");
-  feed5->setTitle("aaa");
-
-  cat1->appendChild(feed1);
-  cat1->appendChild(feed2);
-  cat1->appendChild(cat2);
-
-  cat2->appendChild(feed4);
-  cat2->appendChild(feed5);
-
-  m_rootItem->appendChild(cat1);
-  m_rootItem->appendChild(feed3);
-  */
 }
 
 FeedsModel::~FeedsModel() {
@@ -463,6 +439,10 @@ void FeedsModel::assembleFeeds(FeedAssignment feeds) {
   }
 }
 
+FeedsModelRootItem *FeedsModel::rootItem() const {
+  return m_rootItem;
+}
+
 void FeedsModel::assembleCategories(CategoryAssignment categories) {
   QHash<int, FeedsModelRootItem*> assignments;
   assignments.insert(NO_PARENT_CATEGORY, m_rootItem);
diff --git a/src/core/feedsmodel.h b/src/core/feedsmodel.h
index 52fe8fd4c..d7fb69624 100644
--- a/src/core/feedsmodel.h
+++ b/src/core/feedsmodel.h
@@ -54,6 +54,9 @@ class FeedsModel : public QAbstractItemModel {
     // Returns feeds contained within single index.
     QList<FeedsModelFeed*> feedsForIndex(const QModelIndex &index);
 
+    // Access to root item.
+    FeedsModelRootItem *rootItem() const;
+
   public slots:
     bool markFeedsRead(const QList<FeedsModelFeed*> &feeds, int read);
     bool markFeedsDeleted(const QList<FeedsModelFeed*> &feeds, int deleted);
diff --git a/src/core/feedsmodelrootitem.cpp b/src/core/feedsmodelrootitem.cpp
index 4644e32c3..8b8dfa3a4 100755
--- a/src/core/feedsmodelrootitem.cpp
+++ b/src/core/feedsmodelrootitem.cpp
@@ -27,6 +27,10 @@ FeedsModelRootItem::Kind FeedsModelRootItem::kind() const {
   return m_kind;
 }
 
+QIcon FeedsModelRootItem::icon() const {
+  return m_icon;
+}
+
 FeedsModelRootItem *FeedsModelRootItem::child(int row) {
   return m_childItems.value(row);
 }
diff --git a/src/core/feedsmodelrootitem.h b/src/core/feedsmodelrootitem.h
index fdb1046f5..416ee8b6d 100755
--- a/src/core/feedsmodelrootitem.h
+++ b/src/core/feedsmodelrootitem.h
@@ -37,6 +37,7 @@ class FeedsModelRootItem {
     virtual Kind kind() const;
 
     // Each item has icon.
+    QIcon icon() const;
     void setIcon(const QIcon &icon);
 
     // Each item has some kind of id.
diff --git a/src/gui/feedsview.cpp b/src/gui/feedsview.cpp
index 1b5e996bd..940da5d41 100644
--- a/src/gui/feedsview.cpp
+++ b/src/gui/feedsview.cpp
@@ -26,6 +26,14 @@ FeedsView::~FeedsView() {
   qDebug("Destroying FeedsView instance.");
 }
 
+FeedsProxyModel *FeedsView::model() {
+  return m_proxyModel;
+}
+
+FeedsModel *FeedsView::sourceModel() {
+  return m_sourceModel;
+}
+
 void FeedsView::setSortingEnabled(bool enable) {
   QTreeView::setSortingEnabled(enable);
   header()->setSortIndicatorShown(false);
diff --git a/src/gui/feedsview.h b/src/gui/feedsview.h
index f49f56b47..6002a0335 100644
--- a/src/gui/feedsview.h
+++ b/src/gui/feedsview.h
@@ -16,6 +16,9 @@ class FeedsView : public QTreeView {
     explicit FeedsView(QWidget *parent = 0);
     virtual ~FeedsView();
 
+    FeedsProxyModel *model();
+    FeedsModel *sourceModel();
+
     // Enables or disables sorting.
     void setSortingEnabled(bool enable);
     
diff --git a/src/gui/formcategorydetails.cpp b/src/gui/formcategorydetails.cpp
index ffa4ed019..b0fbaeba5 100644
--- a/src/gui/formcategorydetails.cpp
+++ b/src/gui/formcategorydetails.cpp
@@ -1,25 +1,63 @@
 #include "gui/formcategorydetails.h"
 
+#include "core/defs.h"
+#include "core/feedsmodelrootitem.h"
+#include "core/feedsmodelcategory.h"
+#include "core/feedsmodel.h"
 #include "gui/iconthemefactory.h"
 #include "gui/feedsview.h"
 
+#include <QPushButton>
+
 
 FormCategoryDetails::FormCategoryDetails(FeedsView *parent)
   : QDialog(parent) {
-  // Set flags and attributes.
-  setWindowFlags(Qt::MSWindowsFixedSizeDialogHint | Qt::Dialog);
-  setWindowIcon(IconThemeFactory::getInstance()->fromTheme("document-new"));
+  initialize(parent);
+  loadCategories(parent->sourceModel()->getAllCategories().values(),
+                 parent->sourceModel()->rootItem());
+
+  setWindowTitle(tr("Add new category"));
 }
 
 FormCategoryDetails::FormCategoryDetails(FeedsModelCategory *category,
                                          FeedsView *parent)
-  :QDialog(parent) {
-  // Set flags and attributes.
-  setWindowFlags(Qt::MSWindowsFixedSizeDialogHint | Qt::Dialog);
-  setWindowIcon(IconThemeFactory::getInstance()->fromTheme("document-new"));
+  : QDialog(parent) {
+  initialize(parent);
+  loadCategories(parent->sourceModel()->getAllCategories().values(),
+                 parent->sourceModel()->rootItem());
 
+  setWindowTitle(tr("Edit existing category"));
 }
 
 FormCategoryDetails::~FormCategoryDetails() {
   qDebug("Destroying FormCategoryDetails instance.");
 }
+
+void FormCategoryDetails::initialize(FeedsView *view) {
+  m_ui = new Ui::FormCategoryDetails();
+  m_ui->setupUi(this);
+
+  // Set flags and attributes.
+  setWindowFlags(Qt::MSWindowsFixedSizeDialogHint | Qt::Dialog);
+  setWindowIcon(IconThemeFactory::getInstance()->fromTheme("document-new"));
+
+  // Add button for obtaining data about feed from internet.
+  m_btnObtainDetails = m_ui->m_buttonBox->addButton(tr("Get details via internet"),
+                                                    QDialogButtonBox::ActionRole);
+  m_btnObtainDetails->setIcon(IconThemeFactory::getInstance()->fromTheme("document-save"));
+}
+
+void FormCategoryDetails::loadCategories(const QList<FeedsModelCategory *> categories,
+                                         FeedsModelRootItem *root_item) {
+  m_ui->m_cmbParentCategory->addItem(root_item->icon(),
+                                     root_item->title(),
+                                     root_item->id());
+
+  foreach (FeedsModelCategory *category, categories) {
+    m_ui->m_cmbParentCategory->addItem(category->data(FDS_MODEL_TITLE_INDEX,
+                                                      Qt::DecorationRole).value<QIcon>(),
+                                       category->title(),
+                                       category->id());
+  }
+
+}
diff --git a/src/gui/formcategorydetails.h b/src/gui/formcategorydetails.h
index 527e13e02..9b2a52c3e 100644
--- a/src/gui/formcategorydetails.h
+++ b/src/gui/formcategorydetails.h
@@ -1,10 +1,17 @@
 #ifndef FORMCATEGORYDETAILS_H
 #define FORMCATEGORYDETAILS_H
 
+#include "ui_formcategorydetails.h"
+
 #include <QDialog>
 
 
+namespace Ui {
+  class FormSettings;
+}
+
 class FeedsModelCategory;
+class FeedsModelRootItem;
 class FeedsView;
 
 class FormCategoryDetails : public QDialog {
@@ -22,9 +29,16 @@ class FormCategoryDetails : public QDialog {
     // Destructor.
     virtual ~FormCategoryDetails();
 
-  signals:
+  protected:
+    void initialize(FeedsView *view);
 
-  public slots:
+    // Loads categories into the dialog.
+    void loadCategories(const QList<FeedsModelCategory*> categories,
+                        FeedsModelRootItem *root_item);
+
+  private:
+    Ui::FormCategoryDetails *m_ui;
+    QPushButton *m_btnObtainDetails;
 
 };
 
diff --git a/src/gui/formcategorydetails.ui b/src/gui/formcategorydetails.ui
new file mode 100644
index 000000000..cb4fbe73a
--- /dev/null
+++ b/src/gui/formcategorydetails.ui
@@ -0,0 +1,126 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>FormCategoryDetails</class>
+ <widget class="QDialog" name="FormCategoryDetails">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>362</width>
+    <height>183</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>Dialog</string>
+  </property>
+  <layout class="QVBoxLayout" name="verticalLayout">
+   <item>
+    <layout class="QFormLayout" name="formLayout">
+     <item row="0" column="0">
+      <widget class="QLabel" name="m_lblParentCategory">
+       <property name="text">
+        <string>Parent category</string>
+       </property>
+      </widget>
+     </item>
+     <item row="0" column="1">
+      <widget class="QComboBox" name="m_cmbParentCategory"/>
+     </item>
+     <item row="1" column="0">
+      <widget class="QLabel" name="m_lblParentCategory_2">
+       <property name="text">
+        <string>Title</string>
+       </property>
+      </widget>
+     </item>
+     <item row="1" column="1">
+      <widget class="QLineEdit" name="lineEdit">
+       <property name="placeholderText">
+        <string>Title of the category</string>
+       </property>
+      </widget>
+     </item>
+     <item row="2" column="0">
+      <widget class="QLabel" name="m_lblParentCategory_3">
+       <property name="text">
+        <string>Description</string>
+       </property>
+      </widget>
+     </item>
+     <item row="2" column="1">
+      <widget class="QLineEdit" name="lineEdit_2">
+       <property name="placeholderText">
+        <string>Description of the category</string>
+       </property>
+      </widget>
+     </item>
+     <item row="3" column="0">
+      <widget class="QLabel" name="m_lblParentCategory_4">
+       <property name="text">
+        <string>Icon</string>
+       </property>
+      </widget>
+     </item>
+     <item row="3" column="1">
+      <widget class="QToolButton" name="toolButton">
+       <property name="minimumSize">
+        <size>
+         <width>40</width>
+         <height>40</height>
+        </size>
+       </property>
+       <property name="text">
+        <string/>
+       </property>
+      </widget>
+     </item>
+    </layout>
+   </item>
+   <item>
+    <widget class="QDialogButtonBox" name="m_buttonBox">
+     <property name="orientation">
+      <enum>Qt::Horizontal</enum>
+     </property>
+     <property name="standardButtons">
+      <set>QDialogButtonBox::Cancel|QDialogButtonBox::Ok</set>
+     </property>
+    </widget>
+   </item>
+  </layout>
+ </widget>
+ <resources/>
+ <connections>
+  <connection>
+   <sender>m_buttonBox</sender>
+   <signal>accepted()</signal>
+   <receiver>FormCategoryDetails</receiver>
+   <slot>accept()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>248</x>
+     <y>254</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>157</x>
+     <y>274</y>
+    </hint>
+   </hints>
+  </connection>
+  <connection>
+   <sender>m_buttonBox</sender>
+   <signal>rejected()</signal>
+   <receiver>FormCategoryDetails</receiver>
+   <slot>reject()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>316</x>
+     <y>260</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>286</x>
+     <y>274</y>
+    </hint>
+   </hints>
+  </connection>
+ </connections>
+</ui>
diff --git a/src/gui/formsettings.ui b/src/gui/formsettings.ui
index 079030707..21c612b37 100644
--- a/src/gui/formsettings.ui
+++ b/src/gui/formsettings.ui
@@ -17,7 +17,7 @@
    <item row="0" column="1">
     <widget class="QStackedWidget" name="m_stackedSettings">
      <property name="currentIndex">
-      <number>4</number>
+      <number>0</number>
      </property>
      <widget class="QWidget" name="m_pageGeneral">
       <layout class="QFormLayout" name="formLayout_5">
@@ -583,7 +583,7 @@
        <item>
         <widget class="QTabWidget" name="m_tabFeedsMessages">
          <property name="currentIndex">
-          <number>0</number>
+          <number>1</number>
          </property>
          <widget class="QWidget" name="m_tabFeeds">
           <attribute name="title">
@@ -714,7 +714,7 @@
       <bool>false</bool>
      </property>
      <property name="currentRow">
-      <number>-1</number>
+      <number>0</number>
      </property>
      <item>
       <property name="text">