To open the Commando Script IDE click the 'Edit Script' button in the 'VB Script Settings' tab of the Commando Message Processor Configuration window.
NOTE: Before Commando will let you edit a Commando Script, you must first fill out the 'Basic Processor Settings' information.
See the Commando HL7 documentation for further information on how to use Commando HL7:
http://www.hermetechnz.com/documentation/Commando/V1/index.html