We knew we’d read the name James Boyce somewhere else recently, and we just now remembered where! The guy who is suing Arianna, claiming he invented her megasuccessful website, is the one “Page Six” saw “stepping out” with Victoria Duffy as her estranged husband, Dennis Hopper, lay dying of prostate cancer. Duffy’s efforts to score a chunk of Hopper’s millions didn’t go well last year. Will Boyce share her luck?