[HairdewX]

Normally, what I do (manually) is set all my major programs to core 0 only (unless they support dual core, then I leave them be), and all my background processes to core 1 (like AIM, FireFox, ect). You want all your MAJOR system processes set to core 0 (windows won't like it on core 1 for some strange reason).

Edit: You have it backwards, even though it's "core 1" that's core "2", logicly, all computer counts start at 0, not at 1.

Actually I really did mean setting FFXI on the second core. Because the single-threaded system processes almost always have to be on core 0, wouldn't it be better for the second core to handle the game for the least amount of interrupts?