I just received my new 23'' LG HDTV/monitor combo, and am interested in a doing a simple calibration, as the set does not have many picture options. (It only basic things such as sharpness, contrast, brightness, temperature.) Should the THX optimizer suffice, or is there another easy to use calibration disc I should pick up? This screen will be used for PS3, 360, and PC gaming. Thank you for any help!