As a distinguished alum of UB, I second all of the recommendations for good eats and drink put forth. I'd also recommend Anchor Bar for wings, supposedly the birthplace of Buffalo wings. Its down Main Street, closer to downtown Buffalo. Also for pizza, I think the place is called Sal's. Its pretty much next door to The Steer, a popular bar on Main Street right outside the South Campus. It wasn't in existence yet when I attended, but I visited a while back and their pizza was not too far from authentic NY style, but not quite close enough. Better than most of the other offerings in the area IMHO. I also recommend Mighty Taco to you for quasi-Mexican fast food fare. It became a staple of my diet when I was up there and I make it a point to stop in whenever I'm in town.
If you need any recommendations or info when you get situated, just drop a line.