It's best to calibrate your monitor and to take into consideration the lighting on the office environment as well. In the old days calibrating meant you'd synchronize your equipment. With PS it meant you'd adjust or compensate for the colour display of your scanner, monitor, and printer so that whatever you scanned, matched what you'd see on your screen and would output correctly from your printer... this of course is IMPOSSIBLE!!! it's just by calibrating you try to make it as "close-as-possibe".