Depends what you want him to do. Things can be learned and you can always use an extra hand. What you want ot worry about is "why is he getting into it?" In the "world is Flat" T.Friedman states P+CI. That is Passion + Curiosity Intelligence. Your startup and mine have less than 5% chance to succeed and yet we believe like no-one else that 5% is big enough to go thru this journey.We like the money, but if money is your first drive then you will eventually quit at some point when evrything says it is going to be over in One minute. At that point the co-founders who were in it for the money will walk out. The one who were in it for the passion and the challenge to learn and master the ultimate startup language ( not Technology, but "loyal and satisified Users") )will get 2gether and ask themselves " How the F&$ we got into this mess and how the F%^$ can we clean it up now, make it look good and have more users?