The producers of a new film about Ozzy Osbourne's late guitarist sidekick RANDY RHOADS are asking rock fans to help them locate key people from his life. The late rocker is to be the subject of a new documentary after his family gave director Peter Margolis the OK to retell Rhoads' story. Margolis began initial filming in March (07) as the Rhoads family marked the 25th anniversary of the star's death in a small plane crash - and now he's desperate to find key people from the guitar great's life to help fill in a few blanks. The producers of the film have enlisted the help of rock fans via community sharing website MySpace.com, hoping they can help them track down people like Rhoads' guitar teacher Harold Friedman and longtime friend Grace Miller.