Just out of curiosity, how much trouble is it to upgrade a MB and/or CPU - or are they pretty much plug and play? I've swapped out video cards, disc drives, and RAM, but that's about it, and if I'm going to upgrade my video card now I'll probably want to upgrade the CPU and mobo at some point rather than buy a whole new system.
Also, I have a line on a 9500 GT PCI-E 512MB at a very good price, is that likely to be sufficient to run the advanced terrain if not at max resolution/hi-res? (CPU is an AMD single core 2.66 MHz, and 2 MB RAM). I don't play any high-end games, AH2 is about the most demanding graphics I'll run (I do a lot of gaming, but almost everything else is older and less demanding strategy games, which is why I never buy high-end anything), so I'm not inclined to spend $100+ on a high-end card I don't need. I did check to make sure there's physical space for the card.
Last question, if the power supply is the bare minimum recommended by the manufacturer for the card, is there any reason to upgrade now? Also, the old card is integrated on the motherboard and uses a lot more power than the new one, won't the overall power demand actually go down because the old card is disabled?
I also thank you folks for this thread; there's a big gulf between computer-literate enough to do these upgrades and follow instructions to configure the game and knowledgable enough to interpret the numbers and fan reviews and know what they'll actually mean in performance.