I found the following on the Atlanta Music Guide. These are all free concerts. :) I will be attending a few (as many as possible) of these. Thanks Mandy!
'Downtown Rocks' concert series at Underground Atlanta
99X's Downtown Rocks is back this Summer! The massive performance stage, built exclusively for the 99X series, will be located just a short walk from the Five Points MARTA station at the intersection of Upper Alabama and Pryor Streets and will feature live music from 7PM to 11PM, each Saturday.
2005 Schedule:
July 9, Cake, Stereophonics, The Caesars
July 16th, Weezer, The Bravery, The Dead 60's
July 23rd, TBA
July 30th, Ben Folds
August 6th, Chevelle, Seether, Crossfade
August 13th, Garbage
For more information click
ME.
You may have to get a freeloader card from 99X to get into the shows. It can be obtained from their website.