diff --git a/workflows/gobrowser.py b/workflows/gobrowser.py
index a3abe38..662bf08 100644
--- a/workflows/gobrowser.py
+++ b/workflows/gobrowser.py
@@ -333,14 +333,34 @@ class GOWeightFunction(workflow.Function):
             return options
 
 
-class Options(dict):
+class TTestOptionsDialog(workflow.OptionsDialog):
+
+    def __init__(self, data, options):
+	workflow.OptionsDialog.__init__(self, data, options,
+                                        ['X', 'Categories'])
+
+class TTestFunction(workflow.Function):
     def __init__(self):
-        dict.__init__(self)
+        workflow.Function.__init__(self, 't-test', 't-test')
+        self.options = TTestOptions()
+
+    def run(self, x, categories):
+        self.show_gui(x, categories)
+
+    def show_gui(self, x, categories):
+        dlg = TTestOptionsDialog([x, categories], self.options)
+        dlg.run()
 
 
-class GOWeightOptions(Options):
+class TTestOptions(workflow.Options):
+
     def __init__(self):
-        Options.__init__(self)
+        workflow.Options.__init__(self)
+        
+
+class GOWeightOptions(workflow.Options):
+    def __init__(self):
+        workflow.Options.__init__(self)
         self['similarity_threshold'] = 0.0
         self['rank_threshold'] = 0.0