Sup bulldogfan. The bike rack and Indian Cycle will have the most selections for any type of riding, and Gary at Pro Bike will have some sweet road bikes. Picked up a Masi from his this year. Love it. The 100 miles is worth the trip to get a good ride and some great help. Welcome to two wheels, and check out the Jackson Metro Cyclists group on Yahoo. Granted you won't be able to make any Wednesday afternoon rides, but there are some great weekend organized rides you can find out about (though I think they are all done for the year).
Go State.