Finding hardware identifier

[Wade Smart]

20080503 0720 GMT-6

Im was reading in the Ubuntu forums about tweaking my web cam and they keep 
talking about this hardware identifier. As an example:
Vender Name		VenderID 	Product	ID
Logitech 	48 	0x046d 		0x0890 	

But none of these posts every say how they find this out.

Is there a command to list this information.
I have a logitech quick cam in my usb port that I would like to get this 
information on.

Wade