I talked to mine a little while after he got to college. I'd been there for a few weeks, and we'd been talking about how dull college was compared to the program we'd been at the summer before. (It was a very selective education-intensive month-long course, and I think we'd both describe it as one of those events that inspired us forward.) I asked him if he'd be up for trying to launch a web site business, and he said "absolutely." And, after talking about it for a while, we both agreed that if push came to shove, we'd both drop out rather than abandon the project, if it ever seemed like there'd be a foreseeable future to it. We'll hopefully be applying for this next summer.

I think you should try to get him excited with what you're doing, first things first. If he's passionate about it then he'll be that much easier to recruit.