I have Intel Core2duo 2.2 ghz processor,150 gb hdd,dvd drive,1gb ram,windows 7 64 bit, i want to upgrade my graphic card from 128mb to 1gb (ati radeon hd 5770) so i want to know that does my computer accept it or not will the games work on it in hd and i am also upgrading my hard disk to 320 gb and ram to 3gb so plz tell me that the graphic card will work fin eon my computer will i get the gaming in hd i'm waiting for your answers so better be fast