Here is how to prepare a (or similar method) to handle registration automatically. Method 1: Using wincmd.key in a ZIP File (Easiest Method)
Drop tcmdkey.zip in the installation directory. Wincmd Key To Reg zip
You can run the totalcmd.exe installer with the /K switch to install the wincmd.key from the same folder. If you can tell me: Here is how to prepare a (or similar