@SomeoneWeird: Eventually, running Ubuntu as my main OS and Windows in a VM is my goal, but it creates too many headaches at once. For example, I really like my VPN WiTopia, but it doesn't have a Linux version. Another example: my mobile broadband card technically will work with Linux, but it involves two pages of tedious instructions.
So, I am slowly phasing Windows out and Ubuntu in. For example, I now do all of my web surfing in Ubuntu running in a VMware VM.
@1MLyg5WVFSMifFjkrZiyGW2nw: I am running Windows 7 and I am trying to restrict any possible malware from installing and/or running itself without entering the Admin password.