However as said before, currently when I run Apple SW update from Snow Leopard 10.6.8 will NOT detect any update for my current BootCamp 3.0.4, so I do NOT know where to find a Mac based update to update Mac BootCamp to 3.1 (as said before, the Bootcamp updates that I can get through Apple update center appear to be ONLY for the windows system as they all are .exe files).
Where I can get a Mac bootcamp update?
There is no Boot Camp Assistant 3.1. The latest Snow Leopard version is 3.0.4. Just run the Boot Camp Assistant that you have in Snow Leopard and it will allow you to create the partition for Windows and begin the installation. Once the installation is complete, you can then either download the 3.1 files mentioned above from Windows or run Apple Software Update from within Boot Camp Windows to update to the latest Boot Camp drivers.
I realize it's a little confusing with the naming.