just a word of advice. I've been told this by people tha have registered patents before. Write your entire idea/plan whatever on a piece of paper and go have it notorized. Also put in there that you have the intention of filing a patent. Put it in a self addressed stamped envelope and mail it to yourself so that it has a USPS dated cancellation on it. When you get it don't open it and that way you can prove the date that you had the idea so if someone else overhears your idea and jumps in on your patent you can prove the exact date you had the idea.
Oh man I didn't see Cindy's post. lol well anyway now you know that it should work.