Geforce 6150 le left for dead

will it work if i download it from steam?
or is the card too low?

I highly doubt it. The 6150 is integrated graphics, and based on a gpu that's several years old too.
You might be able to get it to work with everything on low at 640x480, but it would be best to buy a cheap dedicated graphics card.

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.