Once Vista is released things will start picking up in speed and I would guess that in a year or so you will want to be upgraded to Vista and a DX10 card if you want to play the current games on their recommended settings. However, games like Crysis will still be compatible with DX9 cards as well and Im sure others will follow suit for a little while anyway. Your system should hold up and so i don't think you need to worry just yet.