> It reads the res and depth from the console driver so this can be changed
> with the setdisplay util (which needs overhaulling itself).
> 
> What doe people think is the best way to do this ?
> A single config file like XF86Config. command line options and a RiscOS
> MDF file. A simple config file + an RiscOS MDF file or something else ?
> 

Hmm, how about a tool that read the MDF file and used it to write 
modelines into the XF86Config file?  They you would be able to switch 
screen resolutions at will once the server had started.