An air carrier Dispatcher reported that a flight with a hydraulic problem failed to coordinate with Dispatch and Maintenance to assure proper handling at destination.

Narrative

When the flight was on approach (10;000 FT) I received a call from Operations asking if I knew if the flight declared an emergency and that it may need a tow. I knew nothing of this situation and checked my archive messages for any information between the flight and Maintenance that I may have missed and there was nothing pertaining to an emergency situation. By the time I hung up the phone; I received a message from the crew to call the flight. I tried to call them; no joy. I saw they were about 9500 FT; so I tried going through commercial radio and no joy. The flight was continuing its approach. Once on the ground I sent the flight an ACARS message asking them to call me when they had a chance. I received a call immediately and the crew was not happy they were still waiting for a tow. I asked the Captain about the situation and let him know Dispatch and Maintenance should have been informed of the hydraulic leak when it first happened halfway into the 3 and a half hour flight so we could offer assistance and prepare the arriving station.