Tweak Vista for maximum gaming performance
TechRadar:

"Windows Vista was heralded by its creators as being a speedy operating system. However, it didn't take long for users to realise that Vista's performance was generally no better than Windows XP, and in many cases was actually worse.

Working with a PC that isn't performing to its maximum potential can be a frustrating experience, but this is particularly true if the machine is used for gaming. But there are a huge number of tweaks that can be applied to help make working with Vista less exasperating."