You mean that you have Activesync installed on your Vista machine?
@fred and EliazarX
Hello. You will have to try and run the Activesync installer/uninstaller (.msi file) in XP compatibility mode. See here:http://rupesh-pawar.blogspot.com/2007/01/uninstall-xp-powertoys-in-windows-vista.html
Yes, it appeares in the Programs list.