My client uses Authorize.net but wants to change to PayTrace, which is not one of the preset options. However, PayTrace claims their generic gateway can accept auth.net formatted API requests. They say to just modify username, passwd, transaction key and url. Can this be done by modifying the username/passwd/trans key values on the Confirm page, and then the URL on AuthNet_VB.asp page? or is there more to it? Thanks.