NoLo press has a great website and a great books for reading on patenting something your self. Gives some safeguards to use even if you are sending ideas to a company for a possible licensing agreement. There are some things you should do, forms that you should require Lisle to sign and some that they would require you to sign before submitting an idea, (if they are legit about it) protects both parties.
3m's website has some doc's they require you to sign before submitting ideas that would be good to review. I looked for inventor clubs and forums in my area but did not find anything, local to attend in person, but there may be some in your area. They too had rules that would not allow anyone to discuss an idea at their meetings until the inventor had some basic protection in place so as to protect everybody. Anyone that wants to discuss your idea without insisting that you have some legal protection in place for your idea, before you meet or talk, I would probably suspect.
I have the same bad feeling about the TV inventor guys i have contacted all wanted $ first.
And of course I have ideas for better mouse traps as well.
http://www.nolo.com/products/patent-it-yourself-PAT.html
http://www.nolo.com/products/profit-from-your-idea-LICE.html
Stick with the NOLO pages as they now have some ad links for inventor/patent attorneys strewn about their info pages.
Jut checked out Lisle Inventor's pages look good at the beginning but I would compare the agreement they send with some of the stuff recommended on Nolos books and other patent books.