How can I auto logon to IIS page running windows integrate..

The IIS server (SBS2003) server is running a page (catch.asp) using a VB
script that will catch files POSTed to the page from MS BizServer and store
them on the server (I hope).
As the BizServer is not ours and we don't own one I have to find some method
of POSTing to the secure page before I can say it will work.

Our SBS machine is running windows integrated auth and HTTPS for the page.

How can I automatically pass a valid USER and PASSWORD to the page during
the data POST?

If I go to the page manually HTTPS://server.co.nz/catch.asp I get prompted
for username and password. If I manually enter the details then the script
runs to the point of telling me I am using GET when I should be using POST.

I have old ASP (notepad) ASP.NET and VB.NET (Express) on hand to try any
replies.

Thanks in advance and sorry if I'm asking a stupid question in the wrong
place. Just point me to the right place and I will be on my way.



--

Kev.