I hate hearing that......
Unless, you just want to have 3,500# of junk on your hands, you need to change the fluids, and get it running/drivible. If you just let it sit, there'll be nothing left worth anything. Having sat as long as it has, with water in the tranny and engine, may have already killed them. If it's not covered in your insurance, then you need to get busy to salvage whats left, IMO.
Sorry, for your loss....