How does David Hayden, the founder of Internet search engine Magellan, email-outsourcer Critical Path, and Jeteye, a blogging service, keep going? Last we'd checked, he may owe his bankers as much as $38 million — a debt he's disputing in court — and Jeteye's landlord was trying to collect on the rent. And yet Hayden is moving on to a new venture, according to a resume he's published on his Jeteye page. Archipelago Properties is a "private destination vacation club" — a sort of timeshare for the ultrarich. Hayden writes that he expects to close $40 million in financing by next January. Sounds like Hayden, a general contractor before he became an Internet entrepreneur and who bought grand homes in San Francisco and Sun Valley during the first boom, is at last getting back to a business he knows: real estate.