If there's one thing many computer users like to do with their operating system, it's customizing it to the extreme. And that's precisely what you can do with your Vista computer and Ultimate Windows Tweaker.

This utility includes more than 150 different tweaks you can apply to your system to make it not only more visually appealing, but also faster and more stable. The program works with both the 32-bit and 64-bit versions of Vista.

All tweaks are conveniently organized in categories (Personalization, System Performance, Security Settings, Network Tweaks and so on) according to their effect. In fact, most of them are already present in Windows Vista, and Ultimate Windows Tweaker just offers you an easier way to access and use them.

Ultimate Windows Tweaker doesn't require installation and can be run from a USB key. The program lets you create a restoration point before applying any change, something I strongly advise you to do in case something goes terribly wrong.

On the downside, Ultimate Windows Tweaker doesn't include any documentation, which means that in some cases you may not have a clue about what a certain tweak does. Also, the program was a bit unstable during our testings and displayed a few error messages.

With Ultimate Windows Tweaker you can easily tweak and customize more than 150 different elements and features in Windows Vista.