Just got a SN with USB connector (damn missed wireless version by a day or so).
I have an iMac 8,1 running snow leopard (10.6.

I have checked /library/app..support/google sketchup 8/sketchup/plugins & has 3DxSketchUp.bundle.plugin &3DxSketchUp.rb
I have searched toolbars/ menus without success - am I missing something?
in sys properties 3D connexion tools tab confirms firmware 4.35 & 3DxWare 10 - version 10.0.14 no driver version shown.
I also have a macbook pro, 2011 - running lion (10.7.5) and sketchup Pro (version 8.0.3161 - as above) and after installing all as above
3D connexion applet in system preferences (as it is above) but - under applications - it lists goggle sketchup (in above machine on snow leopard - lists sketchup)
after selecting google sketchup in application list - i get tabs device-application-buttons-advanced and selecting these gives
3D connexion devices found driver version 1.7 - firmware 4.35.
In Sketchup again I can not find SN pop up menu? again checked support folders has 3DxSketchUp.bundle.plugin &3DxSketchUp.rb as above.
As an aside tried demos on both setups -3D Demo & 3Dx Axis worked on iMac (QTVR not available for some reason) on Mac Book pro 3D Demo & 3Dx Axis worked but not QTVR - maybe not relevant but mentioned as others have posted issues re these.
In both situations the 3D mouse news pop-up declares " (pop-up) it can be opened with the menu or panel button (left button for spacenavigator products (on your 3D mouse).
Manual not helpful for specific application usage.
I need to change SN to camera mode to use for architectural modelling.
Am I missing something here?
Can anyone shed any light on this? As at the moment, all I have an expensive paper weight!
Thanks