1998 Chrysler Sebring Wont fire

Acts like its out of gas, Ive been told it could be timing belt OR relays what should I check first? I put a engine analyzer on it and did not read out any problems. Thanks, Bill

updated 12/16/08
How would I replace the timing belt in my garage, I've heard you remove the front engine mount and jack up the engine a little to gain access to the panels, but what else would I have to do? I put on a new distributor, but still no spark. Thanks, Bill