Tranny Problem

My '90 Integra was going down the road and all of a sudden a very loud squealing started from under the hood. The car stopped moving. Now all it does is squeal and the car won't move under its own power. Toasted tranny?

Followup - tranny fluid is leaking from a joint between the two halves of the auto tranny body. Is there a gasket in there? Can it be replaced without removing the tranny? Please comment.