How do I go about renting a few kegs for a wedding?

Visit your local beer vendor (look in the phone book) Each vendor will carry different beers. Then go and pick it up. Don't forget the price of The Keg, Tap, & Tub & cups if you decide to use the vendors plastic cups usually gernic looking with name of beer company on the side. Get 16 oz. cups. Then again you'll probably get nicer cups at a store of your choice.