Cool.
Patchou... they is already a Crack out to remove the ad banner at the bottom of the Msg Window on version 5...
It does crack the messenger exe file, so I dont suggest you add it, but if you want to look at it (dont know how) or use it.
It only works with this version of what I know of:
Download MSN Messenger 5
Download Ad Banner Remover for MSN 5
Scrrenshot to prove it works:
Johnny.