There's a cool little program called Registry Robot, available from PC Magazine, which can change several different registry settings with just the click of a button (and also undo them just as easily). I've been using this program for awhile, and it works wonderfully. An example of some of the things it can change? Rename recycle bin, remove icons from the desktop, change the location of special folders (I used this to move 'my documents' to another partition), find your xp cd-rom key, increase icon cache, increase number of simultanious downloads, turn off error reporting, and tons more. Give it a try, you can download it from here.