ok, i got exactly the same problem, only my mouse is USB, where can i find the location of my mouse? /dev/mouse and /dev/mouse1 both didn't work for me.
it seems logical to me that there is a config file somewhere with the locations of every device on my system... i have no id where to find it.
/edit: atm i cant start xwindow at all :S
I booted linux rescue, but the command "hwbrowser" didn't work there
(i use Red Hat 9 kernel 2.4.20-8)