LCD Colour Calibration

Last time I had a laptop (about 2 years ago now) I had an issue getting the colour calibration on the LCD display just right. The issue that I had is that darks really didn't end up dark and I didn't have the greatest representation of colours at the opposite ends of the spectrum. This of course resulted in a great bug with Lore Invasion where the ambient in the missions was so dark that players could hide in the shadows :)

Since I got my new Dell laptop I have spent a lot of time fiddling around with the display settings (via the nVidia drivers) trying to get that perfect, yet ellusive colour setup that I as an artist can be happy with. I have come close but as of yet haven't gotten it exactly as needed. So if anyone has any suggestions I would love to hear them.