Moved to the correct area. The home products' removal tool does not apply to Enterprise products.
Internet Security Suite
PC Protection Plus
Affected Operating Systems:
I don't normally help out here as I don't use the product but a forum search came up with this: http://community.mcafee.com/showthread.php?t=213200&highlight=uninstall
Most importantly, the McAfee's downloadable removal tool is for the "retail" McAfee versions only.. It doesn't do the job on Enterprise versions.
You don't mention which version of VS Enterprise you have installed.. Either way, the links below should allow you to manually remove either of the Enterprise VS 8.x versions:
Manual Uninstall of Virus Scan Enterprise 8.0i
Manual Uninstall Of Virus Scan Enterprise 8.5i
Hope this helps.