I have sucessfully loaded a pc game: Call Of Duty, when i start the app it cuts out to an error

that reads somewhat like this:
Could not load OpenGL. Make sure you have the latest drivers for your video card from the manufacturers web site.
------------------------------
SO.... I have a
Dell Laptop C610, and where could i download the right software or w/e. i believe this is the problem.
Talk in plain english please because im young and new to the computing world

lol
plz help!
Alexander Papp