I agree with the suggestions above... Italian Greyhound, Boston Terrier and French Bulldogs might be good breeds for you! Maybe a Chihuahua too?

Dachshunds are definitely a bad idea... Maybe they are short, but they need lots of exercise and attention... My Anita could never live in an apartment!

As Krista said, go to PetFinder and do a search there too!

Good luck finding the right dog!