First close down Windows Messenger, Outlook Express and if you are connected
to your Hotmail mailbox, disconnect too (for example by closing Internet
Explorer).
Then go to Start - Run and copy-paste the code mentioned below. Be careful
and copy the exact code as it will change your registry!
RunDll32 advpack.dll,LaunchINFSection %windir%\INF\msmsgs.inf,BLC.Remove
Confirm and Messenger will be removed.
Lenny