when I first got my G-3 I had some problems with the program running properly on a older comp.it will do fine as long as your graphics carg is fairly up to date it should drive the sim just fine I got a Nvidea G force 6600 and the sim works great including the upgrades.
if you use the help line on the knifeedge site they will verify for you that your comp. has the hardware to run the programs for there sim before you buy there system.

hey Mike in Min. look at where I live, San Francisco, the Hub of tech. silicone valley etc... I know plenty about electronics and software design and retail, and what I don't know I can research fairly easy.
www.knifeedge.com has plenty of info as well as free software for the G-3 and free upgrades to the next 2 versions up to 3.5 at no extra cost. buy what you like of course its a personal choice.
I have had plenty of sucess with my sim so its what I would recomend.