Switch to projector output via remote control

[Brainscanner]

Hello everybody, I've scanned through this forum, but wasn't able to find any similar postings.

Until now I have used MediaPortal on Windows XP with a regular TFT monitor. That works fine.

In addition I've gotten myself a projector for some special video impressions :-)
I'm afraid I'm not completely able to use it yet because a cable that is long enough is still being shipped :-(

Anyway... my actual question:
From my laptop I'm used that there's a hotkey (usually FN + F4) that let's you switch from regular TFT display to the VGA/DVI output (usually connected to a projector) or both at the same time. Does anyone know of a way I could do this on a non-laptop? It would be even greater if I could somehow use my remote control to execute this "button press".

Installed is a cheap, but not-that-old nvidia display adapter. But I haven't found anything in the driver control, yet.