Are your system files (the Windows, Program Files, Documents and Settings folder) in a separate partition? If so, you'd just need to format that partition, and save files you want to keep to another partition.
Take a look at the edit I made to my other post (we posted almost at the same time so maybe you didn't see it):
quote:
Originally posted by lopardo
Or tell us what's exactly the error message first, may be we can do something, but I doubt it