diff --git a/src/gui/mainwindow.cpp b/src/gui/mainwindow.cpp
index 4ac40bbdb7ee587d7a023784f9406876c205913f..33b0de15b4c656ac358ce561f909200fb806c1c8 100644
--- a/src/gui/mainwindow.cpp
+++ b/src/gui/mainwindow.cpp
@@ -61,6 +61,7 @@ MainWindow::MainWindow(QWidget *parent):
     _p_load_results_dialog = new LoadResultsDialog(this);
     _p_export_spreadsheet_dialog = new ExportSpreadsheetDialog(this);
     _p_waiting_message_dialog = new WaitingMessageDialog(this);
+    _p_tandem_run_dialog = new TandemRunDialog(this);
 
 
     _project_window = new ProjectWindow(this);
@@ -228,6 +229,9 @@ void MainWindow::doProjectNotReady(QString error) {
 
 
 void MainWindow::doActionTandemRun() {
+    _p_tandem_run_dialog->show();
+    _p_tandem_run_dialog->raise();
+    _p_tandem_run_dialog->activateWindow();
 }
 void MainWindow::loadResults() {
 
diff --git a/src/gui/tandem_run_dialog/tandem_run_dialog.ui b/src/gui/tandem_run_dialog/tandem_run_dialog.ui
index 5a8d39fc8b5fd59b93ca63d29874a89dcff0340a..e69e7c46fdf57d434db94aebe766cde98ea2a486 100644
--- a/src/gui/tandem_run_dialog/tandem_run_dialog.ui
+++ b/src/gui/tandem_run_dialog/tandem_run_dialog.ui
@@ -15,11 +15,39 @@
   </property>
   <layout class="QVBoxLayout" name="verticalLayout_2">
    <item>
-    <widget class="QGroupBox" name="filter_parameter_groupbox">
+    <widget class="QGroupBox" name="groupBox_2">
      <property name="title">
-      <string>Choose MZ data file</string>
+      <string>X!Tandem exe</string>
      </property>
-     <layout class="QVBoxLayout" name="filter_parameter_layout"/>
+     <layout class="QHBoxLayout" name="horizontalLayout_6">
+      <item>
+       <widget class="QLabel" name="label_2">
+        <property name="text">
+         <string>TextLabel</string>
+        </property>
+       </widget>
+      </item>
+      <item>
+       <spacer name="horizontalSpacer_4">
+        <property name="orientation">
+         <enum>Qt::Horizontal</enum>
+        </property>
+        <property name="sizeHint" stdset="0">
+         <size>
+          <width>40</width>
+          <height>20</height>
+         </size>
+        </property>
+       </spacer>
+      </item>
+      <item>
+       <widget class="QPushButton" name="pushButton_4">
+        <property name="text">
+         <string>change</string>
+        </property>
+       </widget>
+      </item>
+     </layout>
     </widget>
    </item>
    <item>
@@ -41,7 +69,7 @@
      </property>
      <layout class="QGridLayout" name="gridLayout_2">
       <item row="0" column="0">
-       <widget class="QListView" name="file_list_view"/>
+       <widget class="QListView" name="fasta_file_listview"/>
       </item>
       <item row="4" column="0">
        <layout class="QHBoxLayout" name="horizontalLayout_2">
@@ -77,6 +105,42 @@
      </layout>
     </widget>
    </item>
+   <item>
+    <widget class="QGroupBox" name="mzdata_files_groupbox">
+     <property name="title">
+      <string>Choose MZ data files to identify</string>
+     </property>
+     <layout class="QVBoxLayout" name="filter_parameter_layout">
+      <item>
+       <widget class="QListView" name="mz_file_listview"/>
+      </item>
+      <item>
+       <layout class="QHBoxLayout" name="horizontalLayout_5">
+        <item>
+         <spacer name="horizontalSpacer_3">
+          <property name="orientation">
+           <enum>Qt::Horizontal</enum>
+          </property>
+          <property name="sizeHint" stdset="0">
+           <size>
+            <width>40</width>
+            <height>20</height>
+           </size>
+          </property>
+         </spacer>
+        </item>
+        <item>
+         <widget class="QPushButton" name="pushButton_3">
+          <property name="text">
+           <string>add files</string>
+          </property>
+         </widget>
+        </item>
+       </layout>
+      </item>
+     </layout>
+    </widget>
+   </item>
    <item>
     <widget class="QGroupBox" name="output_directory_groupbox">
      <property name="title">
@@ -90,6 +154,26 @@
         </property>
        </widget>
       </item>
+      <item>
+       <spacer name="horizontalSpacer_5">
+        <property name="orientation">
+         <enum>Qt::Horizontal</enum>
+        </property>
+        <property name="sizeHint" stdset="0">
+         <size>
+          <width>40</width>
+          <height>20</height>
+         </size>
+        </property>
+       </spacer>
+      </item>
+      <item>
+       <widget class="QPushButton" name="pushButton_5">
+        <property name="text">
+         <string>choose</string>
+        </property>
+       </widget>
+      </item>
      </layout>
     </widget>
    </item>
@@ -118,7 +202,7 @@
      <item>
       <widget class="QPushButton" name="pushButton">
        <property name="text">
-        <string>OK</string>
+        <string>Run</string>
        </property>
       </widget>
      </item>
diff --git a/src/gui/tandem_run_dialog/tandemrundialog.cpp b/src/gui/tandem_run_dialog/tandemrundialog.cpp
index 52a4bc1434e50508a1d874b275a9d4c1dd15e0a1..c49262afe079d222172a45b8450c15da0e480d75 100644
--- a/src/gui/tandem_run_dialog/tandemrundialog.cpp
+++ b/src/gui/tandem_run_dialog/tandemrundialog.cpp
@@ -43,6 +43,7 @@ TandemRunDialog::TandemRunDialog(QWidget * parent):
     qDebug() << "TandemRunDialog::TandemRunDialog begin";
     ui->setupUi(this);
     this->setModal(true);
+    _p_fasta_file_list = new QStringListModel();
     
 #if QT_VERSION >= 0x050000
     // Qt5 code
@@ -63,3 +64,24 @@ TandemRunDialog::~TandemRunDialog()
 {
     delete ui;
 }
+
+void TandemRunDialog::selectFastaFiles() {
+    try {
+        QSettings settings;
+        QString default_location = settings.value("path/tandemrun_fastafiles_directory", "").toString();
+
+        QStringList filenames = QFileDialog::getOpenFileNames(this,tr("FASTA files"),default_location,
+                                tr("FASTA files (*.fasta);;all files (*)") );
+
+        if (filenames.size() > 0) {
+            settings.setValue("path/tandemrun_fastafiles_directory", QFileInfo(filenames[0]).absolutePath());
+        }
+        _p_fasta_file_list->setStringList(filenames);
+        ui->fasta_file_listview->setModel(_p_fasta_file_list);
+
+    }
+    catch (pappso::PappsoException & error) {
+        //QMessageBox::warning(this,
+        //                  tr("Error choosing identification result files : %1").arg(error.qwhat()), error);
+    }
+}
diff --git a/src/gui/tandem_run_dialog/tandemrundialog.h b/src/gui/tandem_run_dialog/tandemrundialog.h
index 844c34572385521d94789b2682043895af93c9e9..a47f2913ff66b88597b4e3910807cbe86917e468 100644
--- a/src/gui/tandem_run_dialog/tandemrundialog.h
+++ b/src/gui/tandem_run_dialog/tandemrundialog.h
@@ -31,6 +31,7 @@
 
 
 #include <QDialog>
+#include <QStringListModel>
 namespace Ui {
 class TandemRunDialog;
 }
@@ -45,11 +46,12 @@ public:
     ~TandemRunDialog();
 
 public slots:
-
+void selectFastaFiles();
 signals:
 
 private:
     Ui::TandemRunDialog *ui;
+    QStringListModel * _p_fasta_file_list;
 
 };