Menu sizes using different main resolutions?

I'm bothered by something. I run FS2004 in 1024x768 (16 or 32) bit resolutions, but all the in-game menu boxes seem to be setup for 800x600.
Is there a hidden setting that I can set to give me full screen menus in-game, without having to set my main res to 800x600?
Thanks..
Mag..
Is there a hidden setting that I can set to give me full screen menus in-game, without having to set my main res to 800x600?
Thanks..
Mag..