You might want to consider purchasing one of the test/setup DVDs that are available. They can help you properly set the controls on your TV for the best possible picture (that is, the best with your set without paying a pro to come and adjust it for you, going into the service menu). Given that you have had your contrast all the way up, it is evident that you would greatly benefit from using such a disc. A decent one that is cheap is the one from Sound & Vision, but there are others available, though I have not done any research on any of the recent releases of test/setup discs, so I could not tell you which one would be "the best".