Fret not boys, help is at hand. Don't know how to approach a member of the opposite sex? Well you can worry no more, because the handy advice guide called How To Talk To Girls, penned by 9-year-old Alec Greven has been picked up by Twentieth Century Fox to be made into a movie to be directed by Shawn Levy.

The book, which started as a way for little Greven to help his school friends, turned into a sensation which sparked three sequels, and has since been published by Harper Collins. Playground playboy Greven, dishes the dirt on how to get around those difficult females, telling boys to be wary of "pretty girls" - and that boys should "comb your hair and don't wear sweats."

Night At The Museum director Levy, who is just about to begin shooting Date Night with Tina Fey and Steve Carell, said of How To Talk To Girls: "The intention is to make a warmhearted comedy, with a tone reminiscent of Big. "

Greven meanwhile, has just finished a children's book on the Watergate scandal - which will no doubt prompt a Frost/ Nixon Jr. style film sometime next year...