Firstly, disable Windows Messenger 4.7 by opening it up, click Tools, Options, Preferences
tab and uncheck 'Run this program when Windows starts'.
If you've already done this, do you have Norton Antivirus 2003 installed? Norton added a new
"instant messaging scanning" feature to Norton Antivirus 2003, which can conflict with
Messenger and display this behavior. To stop it, open Norton Antivirus (Right click on the
Norton Antivirus icon in the System Tray/Notification Area (by the clock), choose 'Open
Norton Antivirus'), click Options, then Instant Messenger then uncheck MSN Instant Messenger
and click OK.
Also, if you completely remove Windows Messenger as Vertical Squirrel showed you how to do,
Remote Assistance, Whiteboard and Application Sharing will no longer function.
Windows MVP, Messenger
Messenger Resources - http://www.yqcomputer.com/