Is it possible for me to create a page, that gets loaded into a pre-sized containerless window - without having to load it from another page that feeds it the content?

this isn't for a website, I'm working on a login at work, I want to open this containerless window directly

I don't think this is possible. Perhaps use active desktop and make a link to it on the desktop's page? That's a cheesy way to do it, but that's the only way I can think to do it.

Maybe create a page that opens this window and automatically closes itself?

But being containerless, I'm not sure what do you mean, but IFAIK, you can't create a page without a statusbar or soemthing. This is to prevent people from fakeing a non-web window, for example, a system window that asks the user to enter sensitive information.

Okay... if the only way to do it is to load the window from another source, can I do this in VBS?