Enough t.v. sets strategically placed where any seat in the house has a good view. Happy hours with good snack food like popcorn, chicken wings, vegetables with dressing, cheese and crackers, pot stickers, rumaki, stuff like that.
Good food. I mean REALLY good food. If its good they will eat it...and pay for it. Specialize in something. Like really juicy, messy great tasting hamburgers with mushrooms or chili peppers or cheese or whatever you can create.
Interesting deserts. this will keep people around. the longer they stay the more opportunity for them to keep buying.
Get cable or a satelite dish so you can have sports showing no matter what time it is. Offer specials on a regular basis, maybe even a different special per night. Keep it all classy. You want waitresses that will be easy to get along with, easy to look at. But most importantly class acts. Good luck!
Gotta go...I'm hungry!