1 Monitor, 2 inputs - switching advice

[Silver]

Hi all,
Been doing some testing on my monitor which has thrown up a couple of questions. It's a Hantarex with S-Video, RGB, VGA inputs. I am planning to run Mame and Windows apps (Zinc/Pcgames) in my cab.

The monitor will take 15KHz signals in the Svideo or RGB inputs, and 31-38 Khz VGA signals in the VGA input (i.e. up to 800x600 NI).  What I'm interested to know if there is a good way of having both (VGA and Svideo/RGB) connected at the same time, and being able to auto switch what signal I send from the PC without replugging or building a manual switch? The Monitor will auto-select an input with a signal if the signal it is displaying drops.

Also, I've noticed serious performance/syncing issues on my radeon card if I have both the VGA and TV-out enabled at the same time. It effects frame rates and vsync very badly.

I'm thinking that a software util that would switch tv-out to vga and back would do the trick if run (in a batch?) from a front end, but am open to suggestions. Or should I should count my blessings and choose 15 Khz or 31 Khz? Purists should note that the monitor actually line doubles internally to give a 100Hz display anyway, but it does do this very well.

Thanks for any thoughts!