Basically, Ben said it all. The only thing I would add is that you can take the Benzos while dealing with any side effects from the anti-depressants. Then you wean off the Benzos and can take them only as needed. Make sure you discuss these options with the therapist or PCP.
I wish you luck in finding a medication that will give you your life back!
Generalized Anxiety Disorder
60 mg. Prozac, Ativan as needed.
"The part can never be well unless the whole is well." Plato