My application needs to retrieve market data, using HTTP protocol, from a vendor, as a batch process. I am planning to build an application using httpRequest httpResponse classes. I have a problem when I post data to the vendors URL, the first request is challenged by "Enter Network Password" dialog box. I have used Proxy object to supply network credentials, but that was for letting my request go out to the internet. In my case the remote host is challenging me. How can I supply these credentials to the remote proxy server in a non-interactive mode. I have contemplated getting a window handle of the dialog box and manipulating it, but I am not comforatble with that approach.