I seem to have found a way to get the mac to recognize and connect with the mouse. Here are the simple steps.
Note: make sure that the option to open bluetooth mouse setup if no mouse is connected option is turned off in the bluetooth system preference
1. install the software (the version that came with my mouse was Intellipoint 6.1)
2. In the bluetooth menu in the menu bar (if it's not there then go to System Preferences -> Bluetooth and check the box that says show bluetooth in menu bar) Select browse device.
3. By holding the connect button down until the mouse's battery indicator flashes red and blue you make the mouse visible to the computer.
4. Click search in the bluetooth file exchange window that should now be open from when you selected browse device. You may not need to do this if the mouse is already showing up in the list. Mine was just called mouse.
5. Click the "Add to Favourites" button and it will be added to your favourites in the bluetooth system preference.
6. restart your computer.
7. turn off and on the mouse.
8. when your computer boots. if you click the mouse button a few times it should connect the mouse. (mine connected and was active just after the login screen came up).
Your mouse should now be connected. If you go to the devices tab in the bluetooth system preference you should be able to see the mouse, (more specifically its mac address) and there should be a key beside it showing that it is connected. As well the bluetooth menu icon will have changed to have turned grey and three horizontally placed black dots across it.
Hope this helps.