Microsoft Presenter 8000 problems - Urgent.

Okay my boss is driving me nuts with this. He owns a Microsoft 8000 presenter mouse. He faces this peculiar problem with the mouse where his screen just goes nuts. It’s like alt+tab on steroids. Also any open application gets hammered too. It either opens up something or closes something..

I have re-installed the mouse drivers but it works for ten minutes and back to same.. I've even updated and re-installed graphic drivers but it doesn’t work. It’s a Sony laptop so compatibility is not an issue.

I need help with this ASAP. I am going over a Microsoft document - http://support.microsoft.com/kb/811798/

But if anyone faced this and got rid of it please let me know