agree it will prolly lag alot, and u can always try but playing on all low settings really takes everything out of the game, i now play left 4 dead on my new rig that i build on all high with aa 8x and the other one at 16x at 1920x1080 res on a 23in monitor and wow this the whole gameplay and everything seem amazing. Now its really a blast to play it. At least i recommend u get a better graphic card. doesnt have to be super but so u can play on medium settings or so.