HI, I want to install Windows XP Professional 64-bit on my laptop because I want to take advantage of the 4GB RAM. I want to be able to run 32-bit game on WinXP 64-bit. Is that possible?
As Patio has said Most games and other applications that work on 32 bit vista will work on 64 bit vista.
However as you are asking for advice for running games on XP 64 bit you may find more pertinent information on the game manufacturers websites or even a specialised XP forum
If you are looking to go 64 bit with Vista microsoft will supply 64 bit vista for users with a retail 32 bit vista for the cost of the postage and media (about $10-$12)