I'm not sure about their WinXP professional but I know that Home edition is a copy. I tried to format the partition F drive of the hard drive and it won't let me because it tells me that some program is using it. According to info I googled, this is supposed to work. I wonder if I could format it from DOS? I copied the Wininet.dll file to System 32 and got that working. Now if I could only get rid of Home Edition everything would be back to normal.