I spent hours on the phone and in online chat with HP/Compaq support trying to get them to send me a proper OEM copy of Windows Vista so that I could install my operating systems in the recommended order of Windows 98, Windows XP and then Vista. I have a recovery DVD and Disc Partition which contain a disc image which does only a destructive install. Thank you for the wonderful product! I purchased a new Compaq Presario laptop with OEM Vista Home Premium preinstalled.