Turned comments into docstrings.

diff --git a/supportscreen.py b/supportscreen.py
index bf1932f..0835816 100644
--- a/supportscreen.py
+++ b/supportscreen.py
@@ -4,10 +4,10 @@ import mytkSimpleDialog
 import ScrolledText
 import version

+BASE_SF_URL = "http://pykeylogger.wiki.sourceforge.net"
+
 class SupportScreen(mytkSimpleDialog.Dialog):

-    BASE_SF_URL = "http://pykeylogger.wiki.sourceforge.net"
-
     def __init__(self, parent, title = None,
                  rootx_offset=50, rooty_offset=50):
         mytkSimpleDialog.Dialog.__init__(self, parent, title,
@@ -65,8 +65,9 @@ class SupportScreen(mytkSimpleDialog.Dialog):
         self.t.config(cursor="arrow")

     def buttonbox(self):
-        # add standard button box. override if you don't want the
-        # standard buttons
+        """Adds standard button box.
+
+           Override if you don't want the standard buttons."""

         box = Frame(self)

@@ -133,8 +134,9 @@ class ExpirationScreen(mytkSimpleDialog.Dialog):
         self.t.config(cursor="arrow")

     def buttonbox(self):
-        # add standard button box. override if you don't want the
-        # standard buttons
+        """Adds standard button box.
+
+           Override if you don't want the standard buttons."""

         box = Frame(self)

@@ -206,8 +208,9 @@ class AboutDialog(mytkSimpleDialog.Dialog):
         self.t.config(cursor="arrow")

     def buttonbox(self):
-        # add standard button box. override if you don't want the
-        # standard buttons
+        """Adds standard button box.
+
+           Override if you don't want the standard buttons."""

         box = Frame(self)