Windows Live Messenger is FUCKED. Slows my computer down to the equivalent of shooting an old man's kneecaps. That's why I did some research and found out the way you can keep MSN7.5

Work around the forced upgrade - Msgshit.com MSN/WLM Forum


It won't work if you change the settings to Windows 2000 while the program is open. You must have not opened the program yet