diff --git a/Code/Mantid/scripts/HFIRPowderReduction/HfirPDReductionGUI.py b/Code/Mantid/scripts/HFIRPowderReduction/HfirPDReductionGUI.py
index 9d8ef70458e0..fe407e60cb0a 100644
--- a/Code/Mantid/scripts/HFIRPowderReduction/HfirPDReductionGUI.py
+++ b/Code/Mantid/scripts/HFIRPowderReduction/HfirPDReductionGUI.py
@@ -29,7 +29,7 @@ def _fromUtf8(s):
 #----- default configuration ---------------
 DEFAULT_SERVER = 'http://neutron.ornl.gov/'
 DEFAULT_INSTRUMENT = 'HB2A'
-
+DEFAULT_WAVELENGTH = 2.4100
 
 #-------------------------------------------
 
@@ -60,11 +60,43 @@ def __init__(self, parent=None):
         self.connect(self.ui.pushButton_loadData, QtCore.SIGNAL('clicked()'), 
                 self.doLoadData)
 
+        self.connect(self.ui.pushButton_unit2theta, QtCore.SIGNAL('clicked()'),
+                self.doPlot2Theta)
+
+        self.connect(self.ui.pushButton_unitD, QtCore.SIGNAL('clicked()'),
+                self.doPlotDspacing)
+
+        self.connect(self.ui.pushButton_unitQ, QtCore.SIGNAL('clicked()'),
+                self.doPlotQ)
+
+
         # Define signal-event handling
 
 
         # Widget type definition
+        validator0 = QtGui.QIntValidator(self.ui.lineEdit_expNo)
+        validator0.setBottom(1)
+        self.ui.lineEdit_expNo.setValidator(validator0)
+
+        validator1 = QtGui.QIntValidator(self.ui.lineEdit_expNo)
+        validator1.setBottom(1)
+        self.ui.lineEdit_scanNo.setValidator(validator1)
 
+        validator2 = QtGui.QDoubleValidator(self.ui.lineEdit_wavelength)
+        validator2.setBottom(0.)
+        self.ui.lineEdit_wavelength.setValidator(validator2)
+
+        validator3 = QtGui.QDoubleValidator(self.ui.lineEdit_xmin)
+        validator3.setBottom(0.)
+        self.ui.lineEdit_xmin.setValidator(validator3)
+
+        validator4 = QtGui.QDoubleValidator(self.ui.lineEdit_xmax)
+        validator4.setBottom(0.)
+        self.ui.lineEdit_xmax.setValidator(validator4)
+
+        validator5 = QtGui.QDoubleValidator(self.ui.lineEdit_binsize)
+        validator5.setBottom(0.)
+        self.ui.lineEdit_binsize.setValidator(validator5)
 
         # Get initial setup
         self._initSetup()
@@ -77,6 +109,9 @@ def _initSetup(self):
         """
         # FIXME - This part will be implemented soon as default configuration is made
 
+        # UI widgets setup
+        self.ui.comboBox_outputFormat.addItems(['Fullprof', 'GSAS', 'Fullprof+GSAS'])
+
         # Mantid configuration
         if IMPORT_MANTID is True:
             config = ConfigService.Instance()
@@ -90,6 +125,8 @@ def _initSetup(self):
         self._localSrcDataDir = None
         self._srcAtLocal = False
 
+        self._currUnit = '2theta'
+
 
     #-- Event Handling ----------------------------------------------------
 
@@ -107,12 +144,68 @@ def doLoadData(self):
         datafilename = self._loadDataFile(exp=expno, scan=scanno)
 
         # Get other information
+        xmin, xmax, binsize = self._getBinningParams()
+        if binsize is None:
+            self._logError("Bin size must be specified.")
+
+        unit = self._currUnit
+
         execstatus = self._reduceSpicePDData(datafilename, unit, xmin, xmax, binsize)
 
         return
 
 
+    def doPlot2Theta(self):
+        """ Rebin the data and plot in 2theta
+        """
+        self._plotReducedData('2theta')
+
+        return
+
+    def doPlotDspacing(self):
+        """ Rebin the data and plot in d-spacing
+        """
+        self._plotReducedData('dSpacing')
+
+        return
+
+    def doPlotQ(self):
+        """ Rebin the data and plot in momentum transfer Q
+        """
+        self._plotReducedData('Momentum Transfer (Q)')
+
+        return
+
+
+
     #--------------------------------------------------------
+    #
+    #--------------------------------------------------------
+
+    def _getBinningParams(self):
+        """ Get binning parameters
+        """
+        xminstr = str(self.ui.lineEdit_xmin.text()).strip()
+        if len(xminstr) == 0:
+            xmin = None
+        else:
+            xmin = float(xminstr)
+
+        xmaxstr = str(self.ui.lineEdit_xmax.text()).strip()
+        if len(xmaxstr) == 0:
+            xmax = None
+        else:
+            xmax = float(xmaxstr)
+
+        binsizestr = str(self.ui.lineEdit_binsize.text()).strip()
+        if len(binsizestr) == 0:
+            binsize = None
+        else:
+            binsize = float(xminstr)
+
+        return xmin, xmax, binsize
+
+    
     def _loadDataFile(self, exp, scan):
         """ Load data file according to its exp and scan
         """
@@ -143,16 +236,19 @@ def _reduceSpicePDData(self, datafilename, unit, xmin, xmax, binsize):
         tablewsname = basewsname + "_RawTable"
         infowsname  = basewsname + "ExpInfo"
         api.LoadSpiceAscii(Filename=datafilename, 
-                OutputWorkspace=tablewsname, InfoWorkspace=infowsname)
+                OutputWorkspace=tablewsname, RunInfoWorkspace=infowsname)
 
         # Build MDWorkspace
         datamdwsname = basewsname + "_DataMD"
         monitorwsname = basewsname + "_MonitorMD"
         api.ConvertSpiceDataToRealSpace(InputWorkspace=tablewsname,
-                InfoWorkspace=infowsname,
+                RunInfoWorkspace=infowsname,
                 OutputWorkspace=datamdwsname,
                 OutputMontiorWorkspace=monitorwsname)
 
+        self._datamdws = AnalysisDataService.retrieve(datamdwsname)
+        self._monitormdws = AnalysisDataService.retrieve(monitorwsname)
+
         # Rebin
         if xmin is None or xmax is None:
             binpar = "%.7f" % (binsize)
@@ -163,14 +259,39 @@ def _reduceSpicePDData(self, datafilename, unit, xmin, xmax, binsize):
         api.ConvertCWPDMDToSpectra(InputWorkspace=datamdwsname,
                 InputMonitorWorkspace=monitorwsname,
                 OutputWorkspace=outwsname,
-                BinningParam=binpar,
-                UnitOutput = unit)
+                BinningParams=binpar,
+                UnitOutput = unit, 
+                NeutronWaveLength=wavelength)
 
         self._outws = AnalysisDataService.retrieve(outwsname)
 
         return 
 
 
+    def _plotReducedData(self, targetunit):
+        """ Plot reduced data
+        """
+        # whether the data is load?
+        if self._inPlotState is False:
+            self._logWarning("No data to plot!")
+
+        targetunit = '2theta'
+        if self._currUnit != targetunit:
+            self._currUnit = targetunit
+            self._rebin(targetunit)
+            self._plotBinnedData()
+
+
+
+        # read the xmin, xmax and bin size
+        xmin = float(self.ui.lineEdit_xmin.text())
+        xmax = float(self.ui.lineEdit_xmax.text())
+        binsize = float(self.ui.lineEdit_xmin.text())
+
+
+
+
+
     def _rebin(self, unit, xmin, binsize, xmax):
         """ 
         """