To prevent WFP (Windows File Protection) to restore the files delete the items found in “Program FilesNetmeeting” from the folders:

%systemroot%Windowssystem32dllcache
%systemroot%WindowsServicesPacksI386

Execute the following commandline:

%systemroot%system32rundll32.exe setupapi,InstallHinfSection NetMtg.Remove 132 msnetmtg.inf

After a reboot Windows 2003 asks to delete user-settings for netmeeting; answer with Yes