I am surprised to see this question resurfacing last half year because I think that the answer to this question was pretty much nailed down by Vinicius Vacanti in his blog post in Sep 2010 http://viniciusvacanti.com/2010/09/27/should-you-hire-a-prog...
In short - it depends on the nature of your start-up and the challenges your start-up is tackling. Depending on those you 3 options:
1. Find tech co-founder (and don't do start-up w/o such person).