How do I find out what pci bus my video card is on for linux mint 7?

I'm configuring my pci nvidia 8400 gs card, and I was told to go to my hardware manager to find out what bus my card is on. Well, there isn't anything called a hardware manager that I could find. So what should I do to find out where my card is?|||Open a terminal and type:

ls /proc/bus/pci/$(lspci | grep VGA | cut -d ' ' -f1 | sed -e 's/:/\//')