OK, the links didn't work so let's try this(Sorry, we Canucks aren't overly up on US geography but I think Augusta is further north than Atlanta so I listed it first):

http://www.google.ca/local?hl=en&lr=&q=ballroom+dancing&near=Atlanta,+GA&oi=localr


http://www.google.ca/local?hl=en&lr=&sa=G&q=ballroom+dancing&near=Augusta,+GA&oi=localr

http://www.dancelovers.com/regional-us---georgia.htm

West Coast Swing Atlanta,(770)642-0687
Atlanta Swing Dance Club,(770) 919-2886
Shag Atlanta Club,(404)636-0355
West Coast Swing Atlanta, (770)436-6676
Golden Isles Shag (Brunswick,Ga.),(912)638-6788
Savannah GA Shag Hotline,(912)898-0567