Changing Display Preferences

I have a terrible lcd monitor that only supports refresh rates up to 75hz and will show an "Out of Range" error if the refresh rate is too high. Whenever I turn on my computer or have it come back from sleep, for some reason Mac OS X resets the refresh rate to 85hz even though the monitor can only support 75. I've pretty much had to keep a separate crt monitor next to my lcd to troubleshoot it and reset the refresh rate and then plug the computer back into the lcd.
Question: How can I automatically change the Display Refresh rate if it exceeds 75hz to go back down to 75hz? Or some other workaround/fix?
I've got a feeling this is a problem with the monitor and or graphics card or something similar as this problem has persisted through numerous Mac OS X clean installs and a replaced HD.

As for problem with the monitor I mean that it may be telling the graphics card that it can support 85hz, even though it can't. But it works and everything if I set the refresh rate at 75hz without any problems whatsoever.

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Message was edited by: JohnnyGuns

While I was exploring guitar 'Learn to Play', my little boy mashed the keyboard resulting in the lesson display preferences changing and now I can't figure out how to change them back.
Specifically, the guitar neck at the bottom of the display has disappeared and the instructional video has reduced in size by about half. As well, underneath the lesson timeline there is what appears to be a purple audio track that wasn't there when I started but now I can't get rid of. I have scoured these forums and the Internet in general and can't seem to find instructions on how to return to the default display preferences.
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Message was edited by: JohnnyGuns

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Changing Display Preferences

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