How to remove ms messenger
Open the sysoc.inf file (located in C:Windowsinf)
Remove "hide" from any line which has it (leave all commas)
After a reboot go to Add/Remove Programs -> Add/Remove Windows Components. There should now be more to remove.
If you can't get rid of pesky Windows Messenger using this method, try this... In a DOS box, type :
RunDll32 advpack.dll,LaunchINFSection %windir%INFmsmsgs.inf,BLC.Remove
... this should do it
-from http://www.dnbproduction.net/xptweak.htm
Remove "hide" from any line which has it (leave all commas)
After a reboot go to Add/Remove Programs -> Add/Remove Windows Components. There should now be more to remove.
If you can't get rid of pesky Windows Messenger using this method, try this... In a DOS box, type :
RunDll32 advpack.dll,LaunchINFSection %windir%INFmsmsgs.inf,BLC.Remove
... this should do it

-from http://www.dnbproduction.net/xptweak.htm