Kim,

<< How will I see if I get a HTTP_OK or Error in the Onload of the Browser. >>

You can use this property to do so:

http://www.elevatesoft.com/manual?action=viewprop&id=ewb2&comp=TBrowser&prop=DocumentText

Just look for a special error string in the document text that you populate when there's an error on the back-end.  It's not a great solution, but it does work, especially if you can control the response content that is populated into the TBrowser instance.

Tim Young
Elevate Software
www.elevatesoft.com