"If you have brought a new PC with Vista Business installed you can down grade to XP Pro on the Microsoft downgrade option. You will need a copy of XP Pro which most people have brought seperately. I managed to get the discs from HP direct, I phoned up tech support and after a breif chat they turned round and said they would send me them free of charge. When you install them you use the Actuvate Using the phone option, you then give them your Vista Serial key and ask them to associate the Vista serial with XP."

Hi Zane2G,

Regarding statement above, May i know what are the installation CD you use for it? CATIA installation CD in window operating systems? or 64 bit window operating systems.?

IF you downdrage the VISTA into XP Pro, are means whole window operations will act as XP PRO?

SO, what will be the different you directly install it in XP PRO?

THansk