I think you're right about the monitor .inf file though. Have you gone to you monitor's mfg. web site to download thier most recent .inf files?

Does not exist. Monitor is a Futura-branded Likom model L7055XX. Cannot find an INF for that model. Found some user-created INF for Likom monitors which did not contain that specific model, tried it, no change in the behavior of the drivers. Always locked at 720x576 no matter what.

Note that this is just the windows desktop settings that won't change to that rez. I can go into a DirectX game and it'll do higher rez than that. Just Windows won't let me change the screen rez at the desktop.