I think the majority uses 16:10 or 16:9 monitors today.
The sim will not accept anything but 1024x768; anything smaller is displayed in the upper left corner and doesn't fill the screen; anything larger is aligned to the upper left corner and the "excess" is cut off. I have considered rescaling the maps and text so they will display properly on a wide screen monitor (I use one also), but this entails rescaling 3-7 vector layers in each master file ...and there are currently about 200 LODs to do. For now I am just replacing the background images and correcting a few errors; I am still working on updating the series to add the info screens and thumbnail maps so will probably work on the rescaling then (RL just keeps getting in the way).
That's one of the "errors" to be corrected, along with changing a few track lengths to agree with the data in the AIW files (which is what the sim uses to compute lap times; real world lengths, where different, will be moved to the info screens).
Edited by jgf, Nov 02 2012 - 10:11 AM.