Be sure to read on our SSDI / SSI forum so you know ahead of time what you need to qualify and if you might qualify. lots of hoops and takes time..
be sure to check out the sticky threads there too..
Generally, if you are able to do some sort of gainful work (doesn't even have to be your same job ), that is the best route to go.
http://neurotalk.psychcentral.com/forum28.html