Nah, I haven't got that option.
I've just downloaded new drivers off Logitech, and setup my mouse button now, and it all works, now I can bask in 3D glory!
Might invest in one of those 3D space navigator things, we have them at work, and they're amazing fun!
It might be a bit of a n00bish question, but I've just bought a new mouse for my workstation, which has a middle scroll button.
Now at work, we are able to use the middle scroll button, to view the part/assembly in different projections, I.E If I hold the left button and the middle button down...