web.config settings
Use device type of 17 for credit card processing.
Merchant or Account ID setting can be added that overrides the setting in the ww.dll registry (important for being able to process web transactions done through different installs of the pages with a different merchant number):
<!-- altTermID overrides the termID in ww.dll settings if present
<add key="altTermID" value="WEB"/>-->
<!-- altAccountID overrides the AccountID in the registry for Australian credit cards
<add key="altAccountID" value="Web1"/> -->