Presenting a business idea?

[Blah...]

Hey guys, I'm an amateur coder. I however have outlined and heavily planned on creating a social network website that I feel has tremendous potential, I already have a network and can get thousands of members pretty quick, potentially millions. It it designed by me.

I however am just a college student, I lack funds, and I need an experienced coder to help me. I want a business partner and I'd split things evenly with them. You see, my brother went to Harvard and already runs his on web company. Do you think if I approached him with my company plan, he'd join? My idea is very unique and I'm doing the marketing and spreading word, while he codes. We get along really well and he is already like my mentor anyways.

If you were presented a very successful company plan and could see a big profit, would you join as a partner?