Yeah I admit it was really stupid, but i tried to change the system drive letter through regedit.exe using an online guide. Now, it boots up, and the logon screen is blank. I can't get into XP at all. I backed up needed files no no biggie there, but all my settings will go down the drain and I will have to reinstall all my programs from cds if i reinstall windows. I did, however, create a system restore point just before I tried to change the registry. Is there any way to access this with a diagnostic program on a boot disk, or my windows reinstallation disk? I just want to save LOTS of time.