Currently there's no way to do this. Take it back, if you can. The
Intellipoint 5.0 drivers lack many of the capabilities of the 4.1x
version, and the old drivers don't support the new mouse. I also find
the wheel too sensitive for *** , and the wheel button too hard to
press. This really isn't a *** mouse (although I find that it
responds pretty well in games, so at least in that respect it's not bad).
There's been a lot of discussion of these problems at
microsoft.public.mshardware.product. Nobody knows when Microsoft plans
to release new drivers, nor if they will fix the problems.