yeah, as Deepesh stated, you need to actually have a controlpanel installed in order to do it.
there are different panels out there, it depends on your GPU. you have not stated that you have any AMD/Nvidia GPU in it.
so i imagine that you need Intels control Penal. try rightklik on the desktop to check if there is anything called graphic option in the dropdown menu. if not i don't think you have it installed. there are no icon placed on the desktop when you install Intels control panel.
you need to access it via windows control panel, the .EXE or the dropdown menu i was talking about.
in case you are wondering what Intels control panel looks like, then here: http://communities.intel.com/servlet...lipboard01.jpg
on that image you can also see the option we are talking about, the color saturation.
in case you have AMD, take a look at wildcat's post, if Nvidia then you need to disincrease the color vibration.
take a look at this image if you have nvidia: http://home.comcast.net/~bkr2879/NV.jpg