We took a pre-release version of Stardock's TweakVista for a spin back in June, and we were suitably impressed with this OS tweaking tool. Now the company has released version 1.0 in two varieties. One will set you back $20 while there's also a free version with a few features shaved off the top.

Both versions let you identify and disable Windows processes, update display drivers, configure User Account Control options, and analyze your computer's carbon footprint.

The premium version includes an auto-update option, configuration options for a larger number of services, and identifies programs that may be slowing your computer's boot process.

TweakVista isn't the only Windows Vista optimization application around, but it's definitely one of the more comprehensive applications we've seen.