[Mastertech]

Optimize XP - A Windows XP Optimization Guide

Optimize Windows XP to improve both work and gaming performance safely. Windows XP's default configuration is far from optimized. This guide will help you improve your overall system performance. I avoid using or recommending "all-in-one" Windows XP Tweak programs since many blindly adjust settings that have no affect on performance and can cause future problems. This guide is designed to be performed top to bottom, in sequence since some steps are required to be performed before others.

[Wicked101]

Nice idea there, thanks, but let me fix this for you quick.

Optimize XP - A Windows XP Optimization Guide

CIAO
Wicked

[jmmijo]

There's also THIS site too

[daniel_iversen]

These sets of notes explain how to make Windows 2000 run fast on old hardware:

http://www.nexle.dk/daniel/win2000-32mb/

They will work with Windows XP as well

[massada]

Nice site and also an excellent collection of link sites for tweaking.

If you so not have a lot of time for tweaking and go between various functions like graphics to wanting an ultra fast game machine take a look at the site below:

http://www.iobit.com/

I use it and think it is the best out there right now. It switches machine functions with repeatability and my FX flies in the game setting.

Good Luck and thank you the excellent link for tweaking - I enjoy that too

[mctonale]

When I did mine I had a lot more control over what I chose to change and it doesn't even cost anything (takes a while though).

http://www.pcstats.com/articleview.cfm?articleID=1590

[Mastertech]

The Optimize XP - A Windows XP Optimization Guide is not recommended to be used with other guides. Any tweaks, optimizations or utilities from any other guide that work are already in the guide.

For Windows 2000 use: Optimize 2000 - A Windows 2000 Optimization Guide