[~*McoreD*~]

http://www.xptuneup.com
This is the first one...

and
http://www.blkviper.com/WinXP/supertweaks.htm this is the second.

There so much information in these two sites that it would be obnoxious to put it here... and I'm sure there are plenty more sites as good as this two over the net

XP users grab your note pads & go !!!