sell ur mobo,ram,gc,proc..u might get around RM500 or higher if u lucky.. then u buy am2 4000+ , 2gb ddr667 ram, mobo around 200 , and 2nd pcie gc..u probably need to topup a lil bit ..
this is what I actually did a month ago

, and quite satisfy now, enjoying GOW,everyday GOWing

, set everything to max with reso 1280x1024 ( my 17" lcd limit ) ,with around 25-30 fps, but still got some weird lag, well it just the buggy
that means u already installed it

, if that case, just try what cyrus2k said, ignore the crash, dont click neither send report @ do not send ,
as for me, it failed , the game become more lag if I ignore the crash, and the games will suddenly dissappear and go back to windows after further 2-3 crash, so good luck to u
i'm going to get a new com already. currently most likely will get althon x 2 4800+ with some cheap mobo + 2gb ddr2 667 ram + radeon x1950gt. should be able to play at 1024x768 highest smoothly? *finger cross*