GA Highway 400 North to Exit 8/Mansell Rd. Go WEST (left) approximately two miles to Alpharetta Highway/Highway 9 (Look for the Wachovia Bank on the right).  Turn RIGHT onto AlpharettaHighway/Highway 9.  Go to the second stop light, this is Sun Valley Drive (look for the Applebee’s restaurant on the left).  Turn LEFT onto Sun Valley Drive.  Turn RIGHT into 555 Sun Valley Drive NW.  Take the second drive on the LEFT.  Building L-4 is at the bottom of the hill on the LEFT.