Yes, I suppose so. I'll see if I can find out something.
On the other hand, since widescreen TVs are so common these days, I think this kind of setting should be available from within the AV Wizard. Especially since LMCE likes to have complete control over such settings.
When I think about it, perhaps it is possible to change the resolution setting from the pluto-admin website. This way I wont have to worry about LMCE overwriting my settings. I suppose the nvidia driver probably has a modeline already that suits the 16:9 format. (720x576 or something).
Anyone have any idea if this is feasible?