Draw each screen of your system, describing the function of every element on the screen. Deascribe what data you want to store and how it relates to any other data. Then go shopping for a developer (odesk or a local web business) to make a prototype of what you've just specified. If you've really got the money you'll want quality people, so pick some websites that are quality, find out who made them, and get in touch.

If it's a tech co-founder you're after, look out for start-up gatherings or similar in your town.