Uninstall CFMX7 problem

I have installed CFMX 7 on my laptop with Vista as the OS. The machine has only one login with Administrator privileges and that's the one I used to install CF. Now, when I try to uninstall CF (using the same login), it says I do not have the necessary privileges to uninstall it. Someone suggested my JVM may not be current. When I checked it, it was not the current version, so I updated the JVM to the current version. I still get the same error when trying to uninstall. Anybody have any ideas about how to overcome this error and proceed with the uninstall?

Thanks,