Unfortunately, you cannot go back to FAT32 from NTFS once you have done a conversion. You'll have to reinstall and reformat the drive. I'm assuming the folder that you're talking about is the one tied to your user account in C:\Documents and Settings\ The easiest way to fix this is to log on in as the administrator, create a new account with the correct name, and copy the files from your old folder into the new folder using Windows Explorer. Again, you must do this from the Administrator account.
This was first published in September 2004