>>24
http://www.sause.org/folderteint/
http://www.freemacsoft.net/LiteIcon/
http://www.panic.com/candybar/
http://unsanity.com/haxies/shapeshifter (if you're still on 10.4)
http://www.apple.com/downloads/macosx/icons_screensavers/
also keep an eye on http://facadeapp.com/, although it might end up being vaporware

>>25
it's a hash of your IP address, I think.