@jarmahead: I've got a i3, 8GBs of DDR3 Ram, and a GeForce GTX 550 Ti. Is that good enough? It is a five year old game. I have the graphics at max right now. Also, how would I enable Anti-Aliasing? I think I saw something about disabling the line border in the config files but nothing about AA in there.
As for the new weapons, you're saying I should like equip new ones when I get them and try them out and don't go solely by the stats? I have noticed that I don't care too much for shotguns and assault rifles. I prefer having an SMG for close up and sniper rifle for long range.