Shoutbox

Try this:

--> Uninstall MSN Messenger from the add remove programs.
--> Start > run > regedit
   --> Click ok
      --> Click + beside HKEY_CURRENT_USER
      --> Click + beside Software
      --> Click + beside Microsoft
      --> Right Click MSNMessenger and click Delete
         --> Scroll back up and click the - beside HKEY_CURRENT_USER
      --> Click + beside HKEY_LOCAL_MACHINE
      --> Click + beside Software
      --> Click + beside Microsoft
      --> Right Click MSNMessenger and click Delete
      --> Close the Registry Editor and try and reinstall MSN Messenger