Hi. I would like to build a rig using the XP media center edition and i would like to know if this version is 32 bits ...64 bits ...or both? I have all the hardware need to build a custom media center rig with older single core stuff and even AGP card with HDMI. Some places tells that you absolutly need an OEM rig but is it true or i can nstall it on my custom rig? Thank you !