Changing page layout to Landscape toolbar button

I am making a new Internet Explorer (Win XP Pro, IE 6.0) toolbar button using this guide:

http://www.windowsdevcenter.com/pub/a/windows/2005/04/26/ie_buttons.html

I just need a batch file with a command which will change the page orientation to Landscape. So I can have a button that changes page orientation with one click instead of going to file, page setup, page orientation.
I need this in Internet explorer only, not any Office apps, and I have no control over the website that I am printing from so I can't use any CSS sheets.

If this is not possible with a txt file, what other options do I have?


Thanks!