Since most of us recommend that you keep your drivers up to date I thought a list of links to the driver update pages for manufacturers would be good. Here is a list for starters, I will be adding on as time goes on.

USRobotics
NVidia
Creative
Visioneer
Conexant
Santa Cruz
ATI (Radeon)
Linksys
Via
3dfx
Canon
Hewlett Packard
D-Link
Lucent
3Com
Lexmark
NetGear
PCTel
Asante
F=MA
Diamond Multimedia
Proview
Sony Monitors
Zoom
Logitech
Microsoft (mouse)
Belkin
IBM
Epson
Pacific Image
Minolta
Microtek
KDS
VisionTek
PNY
Philips
Zyxel
BenQ