Increasing Windows system performance

In my efforts to boot faster without a linux BIOS, I ran across a great tutorial for Windows tweaking. It actually goes through some in depth registry keys but it increases your system performance dramatically. Take a look here. This is directed at Windows XP systems, but some of the tips will definitely work with Windows 2000, and other related Windows OS systems.
Warning: Tweaking your registry could seriously screw up your system. Be forewarned.
Via Diabolikal