Background: Just bought a MBP after YEARS of being a Windows user. I got to know my way around Windows and PCs pretty well. The last monitor I bought was a Samsung 970P LCD (DVI) with NO external buttons for brightness, contrast, geometry, etc. - everything is controlled through software called "Magictune". I accept full responsibility for a poor purchasing decision. I attach this monitor, which works beautifully in general, to my MBP, and it works, except I have no control of brightness or contrast through the display properties in System Preferences- only the screen size and color depth. Samsung's Magictune application for Mac is not compatible with the graphics card in the MBP. The level II tech at Samsung suggested I try to control the monitor features from the graphics card, but he is only familiar with Windows/PC methods. Figures. Being a Mac OS newbie, I need to know: Can I go deeper into the graphics card properties and actually control brightness and contrast for the external display, better than I can through System Preferences? My last resort is to purchase a new monitor, but I would like to avoid that if possible.