Three blocks from The Cell on a sun-drenched afternoon Renee Walker is watering the dusty concrete outside her apartment on 37th Street in her pajamas. Other doorways are boarded up. ''I'm a White Sox fan, always have been, always will be," said Walker. ''The problem here is you get people that don't work, that do other things ... If you mind your business and do the right thing, this ain't no badder than any other part of town."