I have to upgrade my XP Home to XP Pro to access some work software which now works only on Win 2K and XP Pro exclusively. Most places sell it for $199. I do not want to pay that much. There are new copies on ebay for around $100-130 but most say the are academic copies but claim they will work the same on any pc. I don't really want to play games with academic versions but I don't want to pay an arm and a leg either. Is $120 for a regular XP SP2 the best I am going to find? Any suggestions?