Okay, here is the deal. I built my mom a new computer, and everything went together well. However, there is one problem. Her hard drive is labeled as Drive F: I can't really figure out how this happened. It really shouldn't be a problem, but some of her programs and updates doesn't like not seeing the drive C: I asked about this previously and tried what was suggested but it didn't work. I was told to get WCPUID? And use the drive tools to change to drive C, but C was not available. How can I fix this? It is windows XP Professional, and it is the only drive in the computer.