Mass effect for pc... veeerry low res

I just decided to buy mass effect for my pc today (AMD Phenom ii x4 955, GTX 295, 8g ddr3 1600) instead of my 360, since i thought the graphics would be better, since they usually are for pc games. But..... i was very, very wrong. Frankly, the graphics suck and the max resolution is sooo low! I thought a 2007 or 07 (dont remember exact year) would have a higher resolution as a much older game (Halo pc for ex), but i guess that was too hard to do. Is there any way to play it at my monitors res (1920 x 1080)