[mythtv-users] display mythtv on TV and monitor?

[Xamindar]

Is it possible to have mythtv display on both a TV (probably at 640x480)
and a monitor (at 1280x1024) at the same time?  That way I could use
either one without having to reboot.  If it is possible, what video
cards or software can do it?  I currently have a geforce4 in my mythtv
computer but it will only display on one or the other as far as I know.
If I have the TV plugged in it will boot up on the TV.
If I have the TV unplugged and the monitor plugged in it will boot up on
the monitor.