WEST BABYLON - Suffolk police are looking for a drive-by gunman who shot a teen outside his West Babylon home yesterday evening.Police say someone shot a 19-year-old several times outside his Centerwood Street home yesterday at about 6:30 p.m. Witnesses say a passenger in a passing car opened fire.Officials say the teen is in serious condition.Anyone with information is urged to call Suffolk Crime Stoppers at 1-800-220-TIPS.