I am about to format and re-install Win98SE on friend's PC. He has AVG7 Free Edition upgraded from AVG6. He says when he installed AVG7 it did not require entering serial No. He has original serial no. for AVG6. Can anyone tell me if this ser. no. will work with AVG7 or if not, how to obtain one without going through another 10MB download on a very slow dial up connection.