My camera (Olympus Camedia 5.0MP D-595

My camera (Olympus Camedia 5.0MP D-595 Zoom)briefly landed in a mud puddle. I immediately wiped off all the surfaces that I could easily access without taking the camera apart. Later, I placed the camera inside a large, sealed ziploc plastic bag containing an opened jar of Drierite dessicant and left it for several days. Eventually I was able to turn on the camera but I'm unable to access the Menu to change settings or adjust the lens (wideangle/telephoto). I can see a dried dirty film in the viewfinder and flash. Should I attempt to take the camera apart and clean it> Would placing it in a bath of 95% (v/v) Ethanol work? I believe that it would have no electical conductivity at that concentration and evaporate fast. Or would I be going about the problem all wrong? Wasting my time and effort?