If you can patent that idea, then you have a better shot, but patent attorneys will cost you thousands of dollars and even with a patent it's very hard to sell the idea instead of just building the company.
There's a short video about the problem of trying to sell ideas on my website at www.timberry.com
Tim Berry is the chairman of Eugene, Ore.-Palo Alto Software, which produces business-planning software. He founded Bplans.com and wrote The Plan-As-You-Go Business Plan, published by Entrepreneur Press. Berry is also a co-founder of HavePresence.com, a leader in a local angel-investment group and a judge of international business-plan competitions.