As I see it you have to bring some awesome value to the table. Having an idea is a good start but not enough. If you have no technical expertise, then you need to have a strong knowledge of the field in which your idea will be sold. The strongest complement to a technical co-founder is the proven ability to sell and make money.
Good technical people are very much in demand. If you can't offer a decent salary plus substantial equity, you will need to have an amazing idea and a credible, effective plan to making it profitable on equity alone.