I just started using a widescreen 22-inch monitor with FS2004 instead of the standard 4:3 17-inch screen I had been using. At the regular base rez which I believe is 800 by 600 at 16-color depth the image is stretched out horizontally. This is with a DVI connection, BTW.
Trying all the other higher resolutions has resulted in a screen with large amounts of black border space above, below and to the sides of the FS screen image.
So, is there any way to have the inherent 4:3-shaped FS screen, having the image go all the way to the top and bottom on the widescreen (16:9) monitor and with windowbox bars (bars on the left and right hand edges)?