Shoutbox

I'm newish but i have the exact same problem! everytime i reboot my system it seems to of unstalled Messenger Plus, so i have to re-install it! i am the administrator, it doesnt show up in the task menu, (applications or processes), and my computer is XP.

when i went into HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
i found nothing to do with messenger in there.
when i went into HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
i found "MsnMsgr" but i also found "SweetIm" i know that that is bad for Messenger Plus, so i searched it and it came up with a bunch of files, but it won't let me delete them!

1) i restarted my computer
2) I installed plus again
3) Restarted again
4) checked where i saved it, and all the plus files seemed to be there!

i am getting a bit annoyed having to keep re-installing it and need help! please remember that i am not technically minded, so clear instructions would be much appreciated!