I am coming to Pittsburgh on business and this is my first time in the city. I first went on the Zagat's website to see what restaurants were rated and, to my unpleasant surprise, I saw only six restaurants mentioned, and they were all national chains - did I see that correctly? I will be staying at the Sheraton Station Square and am looking for restaurants within walking distance. I love all cuisines, as most chowhounds do. I live in Boston where we have unbelievably good seafood, so if you recommend a seafood place, it has to have high marks. Is there any "Pittsburgh cuisine" that I should be aware of? I lived in Philadelphia a couple of years ago and am moving back this Fall, so I am familiar with Penn-Dutch foods, but is there any other local specialty you could mention? The restaurants you recommend can be upscale and dressy or a hole-in-the-wall-jeans place, as long as the food is great. Thanks, in advance for your advice.