looking to buy some memory 800 or higher.can someone recommend a brand/modelWill going from 2gb to 4 gb make a difference on a 64 bit o/s running fsx?

yes 4 is betterWindows Vista64 can occupy 1.3 Gigs on openingLeaving enough room to play FS2002, maybeSo you need 4I have 6 so that I can remove the virtual memory