awacs alaska

I use the program "XP LoginUI" to change the login pages for XP home on my desktop. Apparently I downloaded a bad screen because now when I load windows it will get to the point where it is about to load to login page, but instead it will kick out a message "[path/file name] Insufficiant Quota" or something to that effect. I have tried going through windows safe mode, but that apparently needs to use the login page as well. With the Xp disc, I have tried Recovery Mode but, secondary problem, I don't can't remember the admin password to my computer. Any help people can give me would be excellent. Also, ideally I would like to retain everything on the drive that windows is currently installed on (i.e. mp3's etc.) Thanks!

thanks wil