I've done this on Windows ME dozens of times and never had to add any driver for said card.
I want to add a 2. usb pci card, so that I can have more slots, particularaly a bluetooth dongle. I want to know if I can do this while I am still using ME. I have the empty slot and think I know how to install it. The hardware part is okay, not sure of the software part and if it will even be suppported. Can you please enlighten me.