I have a m7382 Media Center PC and would like to install Vista Ultimate. Do i need to: 1. DO I need to Install the Paradox bios emulator driver (OEMTOOL.EXE) or should I directly install the HP OEM certificates (hp.XRM-MS) and HP CD key (CD-KEY.txt) because my bios is already an HP bios. 2. Can I install the retail version using the above procedure by entering the CD key during installation & installing the certificates once Vista is installed or do I need the OEM version. If OEM pl provide link where I can download. Please help !!!