TweakNow PowerPack is a comprehensive and easy-to-use Windows 98, ME, 2000 and XP utility that lets you fine-tune Windows and Internet Explorer.
Whether you want to tweak your Windows registry, clean up your hard drive, or increase your multimedia and game performance, TweakNow PowerPack's integrated suite of programs can get your system running .
More info:
hxxp://www.tweaknow.com/