I use Suse 9.1 and my mose wheel is not detected. The mouse is a Logitech MX 510

Is the mouse working at all or just the wheel not working?

When I installed slackware 10.0 I had to manually enable de wheel, but the mouse was working anyway (but not the wheel, off course). I am not sure if the both sistems use the same configuration, but in my case I had to add lines (or change some) in the file: :/etc/X11/xorg.conf

Go to the part that says "Core Pointer's InputDevice section" (which is below) and in the Section "InputDevice" change the lines to the way it is below..., but remember that I am talking about Slackware 10.0, and I don't consider myself any expert (way far of it :-)) but maybe this can help.

another observation is that the mouse I use is PS/2 and after the changes you need to restart the X.
(if you are really going to try make a copy of the file xorg.conf, just in case)

# **********************************************************************
# Core Pointer's InputDevice section
# **********************************************************************

Section "InputDevice"

# Identifier and driver

Identifier "Mouse1"
Driver "mouse"
Option "Protocol" "IMPS/2"
Option "Device" "/dev/psaux"
Option "ZAxisMapping" "4 5"
Option "Buttons" "5"

# Mouse-speed setting for PS/2 mouse......

sorry for my poor English...for its not my native language..and sorry if I put too much details, this could bother some people...

Daniel my brother,
thanks for taking Your time. Now I got my mouse to work properly, all I had to do was change the preference to USB wheel mouse and then to restart my computer.