1996 Chrysler Cirrus severe transmission fluid leak can't f

i have a 1996 chrysler cirrus 4 cylinder automatic that i just bought from this guy, he said it had a small tranny fluid leak occasionally well we towed the car home. after replacing the battery i drove it 4 miles when it started smoking bad all the fluid was gone,, i bought more tranny fluid and drove it again it smoked again after a few miles...you could actually see the fluid on the road a consistant stream from my driveway and around the block. i cannot see where the leak is any suggestions i live in mechanicville ny thanks michelle