I replied to an add that was on WHL, the dissability digest, signed up for the e-mail updates and pretty much followed the info from there, I didn't buy the book, however I did get excepted the first time which took about a year and a half. I will say that in the course of me trying to keep working and the doctors that I had seen I had some very good records to back up my claim. And the most important, Pray! good luck.
Blessed be the God and Father of our Lord Jesus Christ, the Father of mercies and God of all comfort, who comforts us in all our tribulations, that we may be able to comfort those who are in any trouble, with the comfort wich we ourselves are comforted by God. 2 Corinthians 1:3