I agree with Travis, you shouldn't really be worried about getting seed capital. We believe that you can believe in your product enough to make it do well, we've all been there, but the fact is that's not enough. So what is? Like Travis said: traction. If you build the prototype and then get traction you can goto the VC's, heck you might be in such a good spot you can call the shots like zuckerberg did with facebook. There's no harm in doing this first, and thinking you need capital is usually a false hurdle.

bottom line: keep going.