Vista - Wireless Notebook Optical Mouse 4000

Hi all!

I use a Microsoft Wireless Notebook Optical Mouse 4000 on a notebook
with Windows Vista.

I'm having trouble with the wheel: it doesn't scroll properly in some
applications like iTunes and Picasa 2. Also, on Google Earth I can't
zoom in and out with the wheel. On other applications it works fine.
If I unplug it and use other mice everything works properly.

I have Microsoft Intellipoint v6.1 and all Windows Updates installed.

In Windows XP the mouse works correctly with all applications, even
with the ones mentioned above.

Has anyone experienced this? How do I solve it?

Thanks in advance for any help.

Carlos