You can hide them all using the option in the Security tab from the Tools menu, Options
dialog.
You can't remove specific ones though.
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Jonathan Kay
Microsoft MVP - Windows Live Messenger/MSN Messenger/Windows Messenger
Associate Expert http://www.microsoft.com/windowsxp/expertzone/
Messenger Resources - http://messenger.jonathankay.com
All posts unless otherwise specified are (c) 2006 Jonathan Kay.
You *must* contact me for redistribution rights.