Hi all. I really want to buy a new iMac, but I'm having trouble doing so becuase I do a bit of gaming. I've been browsing basically all of Apple's computers and none of them offer a decent graphics card. The best you can get with an iMac is a 2600 Pro which sucks, the 8600M GT in the MacBook Pros is okay but they're out of my price range. I think it's funny that Apple still uses Doom 3 as a benchmark for the mac pro's 3D performance, and the cards they offer for it aren't that great anymore. Basically, will Apple anytime in the near future offer something that'll give some nice DX10 grunt? I'm not talking anything extreme but a nice 8800 option for the iMac would rock. Can the cards in an iMac be upgraded or are they integrated into the mainboard? Thanks all!