Lots of good golf around Atlanta. Lots of expensive golf around Atlanta!
Seriously, a lot depends on your budget. There are some decent courses for $45-$55. some of the nicer ones run $85-$150. Also depends which side of Atlanta you're staying. Traffic around Atlanta can be horrendous, making a 30 mile trip last an hour or more.
If you could tell us where you;d be staying, we could make some recommendations. Most of the better (thus more expensive) courses are on the north side of town. There are a few gems elsewhere.
Check out
Golf Atlanta for some solid courses (except City of Atlanta courses- they're horrible).