I remember having a similar problem with the primitive windows messenger.
To stop WM from opening, (this SHOULD work for you) -
-(in WM) "Tools">"Options"
-Unselect the first box
A cheap trick I recall using, is defaulting another acount - steps:
-"right-click" on WM taskbar icon
-"sign in" (NOT "sign in as ______")
-Put in a bogus email and password
-Select it to log you in automatically
->Now, when a student manually opens WM, it will then fail, give you an error, and remember the fake email address. Of course, it will then permit the user to log in using a different account.
P.S. You may also find my previous post on how to remove WM at http://reviews.cnet.com/5208-6138-0.html?forumID=31&threadID=64490&messageID=766072
Hope this helps,
A student of mine logged on to his Messenger account in the school PC lab today. First time he's done that at school. He cannot sign out. I've never used Win Messenger. I signed him out, restarted the PC, and still, when WM is run, it automatically signs him in. I cannot find any option to not do this. I even uninstalled WM from Windows Components, emptied the Temp Int files and Cookies, and restarted; but still... after re-installing it and running it, the blasted thing automatically signs in to the student's account.
Can anyone tell me how I can permanently sign him out of it?