>Yes, but at that point (Step #2), the user will be in the other web application. The user's browser will be displaying HTML code and JavaScript from that other application. I don't see how I will have access to the other web application at that point. Maybe I am missing something.

Ok, I see.

If from your application, you use a Web browser control and do it all from that point, you should be able to have a reference to the control and be able to act for step 2 once step 1 is executed.