oh! it’s not to be so difficult!
i can’t do that anyway, i’ve to write a batch file to be run on my computer and simulates the browser functionality just for this special case, not to be a complete browser with all of its functionalities.
it has to request the page and navigates to the page by sending proper requests to the modem, fills in the boxes of username and password and hit the submit button in the same way as the browser itself does.
so i think there must be a way, like writing a perl script which uses a perl module to connect to the built-in web server of the modem…