Hey, just tell me your idea, and I will see what I can do for you!
Seriously though, I looked into it once a few years ago, and the process didn't seem all that hard. There is a lot of paperwork to fill out, but if you really think it will sell, it is worth it. Have you contacted the US Patent office? They can send you paperwork. I think their website might even have a lot of info on it.
But stay away from those TV commercial patent deals. They will rip you off. You will end up either giving them the right to your idea, or they will get a majority of the profits from it. Remember, they usually have you fill out all the paperwork (description, plans, drawings, etc) and send it to THEM first. After that, your idea is out. Why take that chance?
There are "Patent Lawyers" that specialize in patents. I would reccomend to try to contact one of them before those TV infomercial deals. Good luck!