First I would see exactly what the card is with 'lspci'
Then you can use http://google.com/linux
to try to find out what module the card should use. Then do 'lsmod |grep module-name' to see if you have it loaded.
Edit: Now that I think about it, I'm not so sure this involves a kernel module. Look in /etc/X11/xorg.conf to see what the driver is supposed to be:
In mine I have this information:
Identifier "Intel Corporation Mobile GM965/GL960 Integrated
I see in 'lsmod' that I have: intel_agp which I think is for the video.