2 Wireless Mices in the same room [How to switch channels?]

Hi all,

I have a little issue here. The thing is me and my wife is sitting in the same “home office” while working with the computers. However we do have the same Keyboard/mouse setup which include a wireless mouse; “microsoft natural wireless laser mouse 6000”

The issue as you have probably already understood is that we are interfereing each other. So I was guessing if you knew if there was a generic way of configuring the channel/frequenzy on which the mouse is communicating?
(She is on a mac - if you may know a way to tweak her system into switching channel).

Myself is on Gnome (3.0).

Best Regards