not realy a hardware problem is it? doesnt look like it is but they might port it when dx10 is mainstream. thing is console ports to pc tend to suck, you can tell its a console game. look at the difference between cod and cod2, cod was, and still is great, cod2 was just, well the mods would edit it if i posted what i realy thought, it was like a watered down version of the game it should of been.
Nope. There might be some sort of expansion to the COD2 series though. Just like they did with the first series.
cod3 is developed by treyarch, that made big red one, rather than infinity ward, which made the PC ones, and treyarch isn't going to make a PC version, though I heard somewhere not sure where that infinity ward was making a pc exclusive CoD game