Customizing RMS link to Ecommerce Site

[Don C]

Sorry if this has already been discussed, but I can't
search through the archives.

I want to link RMS to my ecommerce site similar to the old
QSCNet and RMSnet, downloading ecommerce transactions
into RMS. Can I use the "RMSNet" and "Internet Order"
buttons and customize them to send commands to my
ecommerce site? If so, what is the format of the message
exchange?

Or, would it be better to create a custom button? If so,
which kind of button (COM,external command, etc.) should
it be and what is the basic semantic? Is there a source
around that documents all the Fire Event/Internal Commands?

Thanks,
DC