I read an article years ago that suggested that startup founders should tell as many people as possible about their idea. They need to build interest in what they are doing and get feedback.
I would not waste time worrying about intellectual property lawyers. Ideas are cheap. Really worth nothing. What is worth something is execution: converting an idea into reality and making something that people want. Although I am an experienced software architect and engineer, I didn't succeed at this with nderground.net. I also thought that I had something that would attact people.
If you're not technical and you don't have money to contribute then its going to be difficult to ever succeed. In general the history of non-technical founders is not good. They don't understand the issues involved in building large software systems and they are poor judges of technical contributors.