Hostid

The Hostid is required for the licensing process and here is how to get it:

Run the "Command" (cmd.exe) application.
Enter ipconfig /all
Copy down the "Physical Address" (aka "MAC address") from the "Ethernet adapter Local Area Connection" (or "... Wireless Connection") section.
The hyphens between the two-digit blocks are not necessary.
All addresses shown here are examples and have to be replaced through your actual address!

Open the "System Preferences" and go to "Network"
Select an ethernet port and click on More Options... > Hardware. If your computer does not have an ethernet card, try WiFi instead.
Copy down the "MAC-Address" code for the licensing process.
The colons between the two-digit blocks are not necessary.
All addresses shown here are examples and have to be replaced through your actual address!