I have a 1971 MGB that the clutch is not working in. I rebuilt the master cylinder as well as the slave. Bleed the system and still nothing. The slave is moving the arm about 1/2 a inch but still nothing. The car has been sitting for aprox 3 years. Is it possiable that the plate has stuck to the fly wheel??

Yes, it's a common problem. Here is a link that tells you how to unstick a stuck clutch. It's for an MGA but procedure is the same.
http://www.mgaguru.com/mgtech/clutch/ct_104.htm

Clifton