To make your mouse wheel work, make sure you specified imps/2 as your mouse protocol in you X configuration:
Option       "Protocol" "imps/2"

Additionally add the following into the same InputDevice section:
Option       "ZAxisMapping" "4 5"

Restart X and your whell should work.

rate this article:
current rating: average rating: 1.2 (29 votes) (1=very good 6=terrible)
Your rating:
Very good (1) Good (2) ok (3) average (4) bad (5) terrible (6)