i just put in the GeForce 5500 DDR 256MB like yourself, an upgrade from the older GeForce MX 4000 64MB. still haven't figured out all of the adjustments right now, but with 1G of RAM, and a mostly slow 2.4Ghz pentium cpu, i run AH great. just be sure to turn off water effects. do you have issues with the waters color with that card, mine gat black/blue with the change. it so dark i had trouble seeing planes sometimes.