A source says Hollywood studios are preparing to file copyright infringement lawsuits against people they say are illegally sharing movies online. The source says the first round of lawsuits will probably number around 200. They'll apparently target users who share digitized versions of films over peer-to-peer networks. The Motion Picture Association of America has said it'll make "a major announcement" about file sharing early today. The MPAA has been reluctant to sue file-sharers in the past. But its new president has made fighting piracy his top priority. A lawyer who defended a software distributor in a copyright infringement case says legal action "won't do any good." He says lawsuits filed by the recording industry against downloaders don't appear to have reduced file-sharing "to any meaningful degree."