A “Spider-Man” fan was busted Sunday night for allegedly breaking into the swanky Soho Grand suite of the superhero’s celluloid gal pal, Kirsten Dunst , and helping a buddy rob her pad. James Jimenez, 33, a Manhattan auto mechanic with a lengthy rap sheet, was charged with burglary and grand larceny after showing up at the First Precinct to talk to cops and his lawyer, police said.He’s accused of helping Jarrod Beinerman slip into Dunst’s penthouse Aug. 9 and swipe her $13,000 Marc Jacobs handbag, $2,500 in cash, cameras and an iPod. Beinerman was busted last week and may have fingered his buddy. Dunst, who plays Spidey’s love interest in the “Spider-Man” flicks, wasn’t home at the time of the heist. Jimenez’s lawyer, John Bostany, told The Post that his client denies knowing anything about the theft.John has been adding some rare HQ promotional stills from some of Kirsten’s earlier movies (Dick, The Virgin Suicides, Luckytown and All Forgotten), Plus some new candid sets.