I just got $600 i want to spend about $300 maybe a little more i have a shitty ecs mobo and pentium D i would like to upgrade those and Quiter Case. I have 1 gig Corsair valueselet ram should i upgrade to 2gigs? I also have a XFX 7600GT its a great card but maybe something a little better. I figured i should just go with a 8800GTS but i dont know if my sorry mobo and pentium d would like that video card?