Don't know what to do to get my emissions to registar when tested

Prior to having my Chrysler 300 M 2000 inspected, had trouble starting it.... took about a minute or two while the lights came on but no turn over from the engine... than it restarted everything... I was than on my way for inspection & when the tech went to check it, it came back saying "Not Ready"... I drove about 30 miles to get to the Inspection site & than tried driving another 20 minutes but it still said "Not Ready" What will it take for me to have emissions pass.. My registration is suppose to renew on May 13th....