See my post in the Bipolar Forum of this date. I have posted a somewhat lengthy article on getting your SSI application approved the first time. It was invaluable when I applied for my 24 yr old son diagnosed with schizo-affective. Also, get the hanbook from the SSA. You can call them and they will mail it to you. It's also online at their website. They give pretty detailed requirements for what does and does not qualify for disability.

Good Luck,
Laura