Good PC3200 ram.. about $200 bucks, will work with the DFI-mobo.
http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=1487205&CatId=1075
Since the DFI mobo, is an Nvidia SLI, you would see an added benefit of buying an Nvidia card since it's a SLI board. I'd go for the 6600 gt, since its a good card and is less expensive than its higher-end counterparts.
http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=1786724&CatId=0
http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=1487205&CatId=1075
Since the DFI mobo, is an Nvidia SLI, you would see an added benefit of buying an Nvidia card since it's a SLI board. I'd go for the 6600 gt, since its a good card and is less expensive than its higher-end counterparts.
http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=1786724&CatId=0