>>Since there is no client side "on error" service - would I need to implement a COMRETURNERROR inside the COM's error method?. It seems the error procedure (in the COM) would be enough for a reset and an alert notification?
>>
>>IOW - a browser COM does not require COMRETURNERROR?
>
>What is the process a communication between the client and the COM? Is this a URL in the browser someone is typing?

In some cases, the browser will fire the URL (a request for service from foxISAPI/MTDLL). The action could be a FORM ACTION (GET/POST) or javascript "onclick" function (GET).

Sometimes the COM will return script (to set states) with a URL included in an onload that requests an HTML file:

* This init function sets a button state and then tagets the HTML "file" to
* load at a specific frame
[function Init(){]+CR+;
[window.parent.frames("LMSFrame").document.forms("buttonform").next.disabled=false]+CR+;
[window.parent.frames("Content").document.location="]+lcReturnURL+["}]+CR+;
[window.onload=Init;]+CR+

Thanks