I just came back to read what was going on here... SD - while the products listed on your link get rid of the loss issue with the antenna and run 12v, they still only run in bridging mode and you need two different devices to have both a wireless access point and a station/repeater. This is a major limitation, and I've only found two devices out there, one at around $1,500 and the other over $2k that can function as both simultaneously, and as a router. Let me give a scenario. You're in Warderick Wells, Bahamas. Internet costs $30 for three days of access per device. You have two laptops (or in our case, three) on board - one for you, one for your wife and one for your kids. With a bridge, you're forced to buy three logins. With a router, you can hide all your computers behind one connection. On top of that, you can also enforce security through a basic firewall since you're running at layer 3. But - your only choices for doing this today are to buy two different boxes (for most non-tech people, that means learning where to put the devices and how to configure your computers to talk to the AP, the AP to talk to the repeater. and the repeater to talk to shore) or to spend a ridiculous amount of money. Anyway - I got tired of explaining to people how to do it and what to buy, so I decided to start a company and to build a new device with my partner. Jeez - now I'm starting to sound like Craig from Rocna
By the way - Yes, you can set up Internet sharing on multiple computers, but it's flaky and unpredictable. I tried setting it up for others on a few cruising boats and just ended up turning it off.