Help! Running Maya 2011.5 on a Mac Pro, running OS-X 10.6.6. (Dual 2.4 Ghz Quads, 12 Gb RAM)
Forced to use a Dell standard, 3-button mouse, there is some strange mapping for the buttons.
LMB is ok. RMB is ok, but MMB is messed up.

The Scrollwheel works ok, but the middle mouse button simply does that 'Expos'e' thing (showing all the windoes on the desktop), and doesn't 'track' or allow pulling Hypershade tiles around, etc.

'System Preferences' offers no option for the middle mouse/scroll wheel.

How do I get the middle mouse button to work as it should?

Thanx!