Before you chuck that camera in the trash, try warming it up a bit.
First take the battery from camera, then warm your oven up to around 100 degrees F. If the thermostat will go that low, you're all set. Just put that guy in the oven and let it sit for a few hours. If the thermostat wont go that low, you'll have to monitor the temp closely and turn the oven on/off by hand.
Or if you have a gas forced air furnace, just put the camera on top of the furnace, after checking with your hand that it doesnt get all that hot. Let it sit there for a few days. Or even sit the camera directly in front of a heat vent, or on a radiator, anywhere warm but not that warm.
Once all the water has evaporated, it should start working.