I bought a new 120GB drive, added to my computer. I installed XP on the 120GB drive with my old drive still there (Windows ME installed). Now the new 120GB drive with XP has drive letter F, and the old drive with Windows ME has drive letter C. I tried to change the drive letter, but the option is not available. How do I fix this? Or do I have to re-installed XP again? Thanks for your help.