The System ID uniquely identifies the computer's MAC address (Ethernet ID). To find this, go to: Start->Programs->Accessories->Command Prompt. In the window type: ipconfig/all The Ethernet adapter's physical address will be given in the form xx:yy:zz:aa:bb:cc.

If Monsters plug-ins are already installed, you can also go to Start->Programs->SpeedSix->License ID to display the MAC address.