Saw over NeoWin that a new utility for Windows XP is out:
XP LogMod is a program designed to give your computer a more dynamic feel. This is accomplished by changing your Logon screen that Windows XP comes equipped with. It eliminates the trivial and potentially unsafe task of manually editing certain parts of the Operating System. XP LogMod provides fast and easy managementchanging of multiple LogonUI screens to help your computer come to life!Download