Totalidea Tweak-XP optimizes XP
Tweak-XP combines tweaking capabilities with performance enhancements. It has
all the settings you would expect in a tweak utility. Tweak-XP also includes
hardware tweaks for the most common CPUs and display adaptors. The Tweak-XP
System-Optimization Wizard offers a 'One-Mouseclick' system performance
optimization. Without browsing through hundreds of registry settings and tweaks
you can easily improve the all-in-all performance of your computer. Its cheap.
$30 bucks or so.