[ALUG] How to get mouse working (Slackware 11)

I have finally got Slackware 11 installed on my Abit AB9 motherboard system - hurrah! However the mouse doesn't work. It's a standard PS/2 mouse and worked in other installations so I'm prety sure it's connected right etc. An "ls -l /dev/mouse" shows that /dev/mouse is linked to /dev/input/mice. What else should I be checking? -- Chris Green (chris@halon.org.uk)