Browse password protected page from vbscript

Greetings.

For a project I need to do the following:

1. Open a URL,
2. send form with username/password to gain access
3. Identify in the page retrieved some html code (a table)
4. Continusouly get the same page and compare the table to identify changes}

Th main purpose its to be able to rapidly detect when a password protected
web page changes.

I have seen some sample code using the "MSXML2.ServerXMLHTTP" and the
"InternetExplorer.Application" object, but none of those I have seen
authenticating.

Any ideas?

Thanks in advance,

Camilo Arango