eTeknix.com posted a guide about turning off UAC in Windows 7

We personally insist that all forms of UAC are disabled as we believe it's more hassle than it's worth and instead a good virus scanner and firewall should be more than sufficient at protecting your system from malware and the like.
There are many different ways of disabling UAC, from stopping it within MSCONFIG, to altering the registry, even using the group policy object editor, but the simplest option is doing it all through control panel, so that's the one that we'll show you today.

  How To Turn Off UAC in Windows 7