Second Life, Tacticat, that sailing program that I don't remember the name of....there are a lot of ways to virtually sail. I truly understand the need for it...winter sucks in many places, it's not always possible to go sailing. But I just don't get excited about pretending to sail while looking at a computer.
I read about something like this sailing simulator in some sailing magazine a few years ago. This I get:
Photo Source: www.virtualsailing.com.au
It's almost all the way there to a realistic sailing experience. Next step, a big fan, somebody with a bucket of water, and a pickpocket and you have the true sailing simulator.