[Japo]

I think the problem is that his monitor/TV simply won't take these resolutions. Each monitor has limited choices concerning what resolutions it can show because of the way it's made, and software can't do anything about that, other than forcing images into another resolution other than their native one by means of scaling or aspect correction. For example my monitor will go as low as 640x480 but neither 640x400 nor 320x200. I think what I've said is correct by I'm not entirely sure.