Thanks again for your answer.

I modified the IFrame code to show User Password in the dropDownList and now the password is in the querystring. I need to do it in this way because of my boss requirements. We will take the risks on security matters. I don't have to worry about this.

Well, now the querystring has the user id and password and if y paste it into a browser window I avoid the login screen (this is what we need) and i'm sent to the next screen. But now I need the same, but into the iframe. Is there any IE settings that avoids me doing this?

Would you be willing to share your hack of the Iframe with me?

There are more horrific things to worry about. Not sure how others are using this but I'm not passing DNN security objects in Iframe. I need to provide access during a transition period to a remote server application. That application is running on an Apache Proxy server and is secured by Basic Authentication with a single user and password. The Iframe page itself will be restricted by the DNN security role.