very new to opengl

ok im trying to play a game called fuhquake which uses opengl, problem is i dont know what opengl is or if my graphics card can support it
i have an nvidia vanta lt card and i use windows xp
can someone explain what it is and if i can use it?

also i should post the error i get, genport i/o initialization failure, grSstSelect: non-existent SST, Could not initialize GL (wglCreateContext failed) Make sure you are in 65535 color more or try -window
i tried running it in -window it doesnt do anything

OpenGL is updated by the video drivers.
So go to the website, donwload drivers (nvidia vanta is a TNT2), and install them according to the instructions.

i did and i still receive the same error