Hello, Trish!
My name is Sailor and I am on the surrogate & donor support staff of a really great agency, ReproMatch in Florida. If you are interested in being a surrogate you should start by registering with an agency with a decent reputation. Watch out for fly-by-nights and use your better judgment. Not all agencies support surrogates, egg donors and intended parents the way they should or the way they promise to. I can only vouch for ReproMatch as I have been a surrogate mother and an ovum donor with them multiple times and now I work for the company.
RM Home Page: http://repromatch.com
RM Surrogate Application: http://repromatch.com/surrogatemotherapplication.html
RM Egg Donation: http://repromatch.com/eggdonoronlineapplication.html
Best of Luck
Sailor K
Surrogate & Donor Support
ReproMatch