herm no, it doesn't work like this. Chipset doesn't provide video, his use is to transfert data on the bus. Look at this diagram from the site you gave us : http://www.intel.com/products/i/chip...5g_diagram.gif
As you see on the left, video card is a different entity, that does use the chipset.
Anyways... use the command "lspci" to find out what chipset your video card has.
As example, on my system :
elf ~ # lspci
0000:01:00.0 VGA compatible controller: nVidia Corporation NV11 [GeForce2 MX/MX 400] (rev b2)
This tell me I have an nvidia chipset. You probably have an intel 950 onboard card.
You might want to try to configure your x with the command XF86config ( or xorgconfig, I don't know if Debian switched to Xorg yet).