Hello, A couple of days ago I bought a bone kit off the net.
http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=3098130&Sku=V133-8820

After looking over some reviews I have come to a crossroads. I dont know what kind of OS to install.
I think to use the crossfire i need vista but i am not sure. Also 32Bit or 64? I read that i could not find the 64Bit bios for the CPU I was going to upgrade to.
           (AMD Phenom II X4 940 Black Edition Quad Core Processor)

Thanks for your time.

MSI website has drivers for XP so you do not need Vista