not really CB related but...
under windows, and without changing anything, a command is sent to an executable called CMD.exe, which in fact is the official windows command line tool.
If you want to send commands to another command line executable, just type the path to this program before the command to send.
I am not sure you can replace (or i don't know how to do it) the official windows cmd line by another using the config panel or evenregedit.
But you can try this (never tried myself) :
- go to c:\Windows\System32\
- backup your old cmd.exe as cmd.bak
- copy your new one here and rename it as cmd.exe
Try at your own risk