I don't have any experience with non-technical cofounders, but I don't think that I'd start an internet company with one unless they were the absolutely most well connected, proven person that was going to be instrumental in getting us into a difficult to enter industry.

We only have one non-technical employee, our office manager Melissa. She's absolutely essential to the team. We have no plans to hire other non-technical people right now, but that doesn't mean that we won't in the future. Who we hire depends on what skills we need.