usb mouse don't work

[Jacques Smulevici <smulevj6@cti.ecp.fr>]

Hello,
I am French fan of Debian so excuse my English.
I am only begining with Linux and Debian but I really want to make 
everything (or nearly) working.

The command : # cat /dev/input/mice should normally display something 
when I move my mouse but I don't see anything.
When Linux is booting, I can read those line:

Starting hotplug subsystem : usbmount : fs type usbdevfs not supported 
by kernel
umount: /proc/bus/usb : not mounted

I suppose that's why my mouse don't work (and I can't also mount any usb 
key). I have already install hotplug and usbutils.
I am using a woody with a 2.6.10 kernel.(but intitialy it was a old 2.2 
kernel) on a Asus L5c laptop.
My mouse is a standard microsoft (-sorry-) hdi mouse.
Thank you for any help!!

--
Jacques Smulevici