WHAT’S ON FRANK’S PC? In an item headlined “Jackson trial breakthrough,” Page Six reports that Frank DiLeo’s computer will be handed over today by the late manager’s daughter in the hope of finding that dang ol’ “smoking gun.” Plaintiff’s attorneys subpoenaed the computer before the wrongful-death civil trial started in April, but were stymied until an Ohio judge found Belinda DiLeo in contempt of court last week and vowed to jail her if she didn’t produce the computer by today. “First she said she didn’t have it, but then she miraculously found it, and she’s handing it in on Monday,” said a source. The “cigar-smoking, bullet-headed” DiLeo, as the item describes him, was working on a tell-all book at the time of his death in 2011; it’s in the hands of Mark Lamica, who worked with DiLeo for nine years. “Frank knew where all the bodies were buried,” said an insider. “If there are new emails on his computer, or a copy of his book, it could rip the trial wide open.” But AEG lawyer Marvin Putnam told the Post, “Unfortunately, this is yet another attempt by plaintiffs to distract the press with a sideshow.” (7/8a)