While your out looking for bikes you might want to check out the Jamis Commuter. Its a simple lightweight 7 speed with 700c tires. I just ordered one from a LBS for $240 and its a good value for whats out there in that price range. Im setting this bike up with fenders and a rack to use for my rainy day/foul weather only commuter bike. They ride nice and have a plush seat.
http://www.jamisbikes.com/bikes/05_commuter.html