I bought a brand new PC and paid R14 000 for it. The very first time I tried to do some upgrading, a message came up that my Windows XP PRO was not an leagal Windows product. I went back to the stores where I bought the PC and was told they only loaded Windows XP PRO as they do so to all customars that do not ask for the original Windows. Since that time I cannot upgrade any programs as the message just appears that say this Windows is not a true one. What do I have to do to resolve this problem as I don`t want to pay a second time for Windows XP Professional?