ice maker working but water dispenser NOT working.

We first called G.E. and then another refrigerator repairman who both told us this may be a big job. One repairman said it might cost $280 to fix. NOT ONE of them said it could be a frozen water line. Thanks to your posting repair stories and Thank YOU Ralph from Bristow, VA. ,(posted 3.13.08) who said FIRST disconnect the quick connect water tube and press the water dispenser to see if water flowed through the line, which it did. Then all I had was a frozen water line and the solution was to turn the freezer down (make it warmer) for a few hours and the line defrosted and the water dispenser and everything else has been working fine ever since then.
I had my freezer set on too cold a setting. The water tube is in the front of the bottom of the refrigerator behind the removable vent grill. The quick disconnect is removed by pushing one part of the connector to the water line and then sliding the water line back and out. It goes back together easily by pushing both parts together.
Thanks for the advice Ralph, without your taking the time to write this solution, a repairman would have ripped me off.
I never had to install the Dispenser Board or any other part. NO COST to fix.