I've done a login client for my internet connection which simply visits an https adress which includes account details and password otherwise submitted through a form on a webpage. It works fine, but I do get one of those annoying certificate alerts which forces me to press "Yes" before the program logins. I want the program to execute at startup, login and then terminate with no user intervention at all.

Is there a way to make a Microsoft Web browser control to automatically accept/install persumed certificates it will encounter? Or maybe there are some other control/method better accommodated for this precise task?

Or (this is kind of off topic) maybe it is possible to permanently install a certificate in Internet Explorer (like in Opera) so that whenever it is encountered, it is accepted? If so, maybe there is a way to have the program install the certificate in that manner?