I know where your comming from, I also suffer from agoraphobia and PA's. Its a long hard road but with time it can be delt with. Unfortunatly no one really knows what causes it or what medications cure it. Medications help with the anxiety but thay dont cure the problem. I have been med free for over a year now and I am progressing better/further then when I was taking my daily cotail of meds. There is a web site that I frequent that I have to help with those stressful times
http://moonbeams.ipbhost.com/index.php
Plus there are alot of fellow agoraphobics who are members of the board.
If you need a shoulder just send me a pm.
JRM