Bad advice Montana. azn angel you can Uninstall Windows Messenger but it is not highly recommended. Parts of Windows actually use parts from Windows Messenger. Remote Assisstance for instance. Now you can disable Windows Messenger (just search the forums, I dont have a link on hand for it.) Or you can open Windows Messenger (Doesn't matter if it is signed in or not, Click Tools > Options > click Prferences tab > Uncheck Run this program when Windows Starts. This will prevent it from opening up with windows but if a Plus! Plugin needs to use the Messenger Api it will open the EXE.
here is the link to disable messenger
http://www.dougknox.com/xp/utils/MessengerDisable.zip
/ 
