NEW YORK, Feb 5 (Reuters) - America Online on Thursday said it will let users of its instant messenger service communicate over a live video connection for the first time, months after federal regulators lifted limitations on the company. AOL, the world's largest online service and owned by Time Warner Inc. , also said it will link its live video chat service to Apple Computer Inc.'s iChat service. The deal expands a May 2002 relationship between the two companies that linked their respective messaging services. More than 35 million active users per month send on average 1.5 billion messages...