Intel mobile 946GM dual monitor

[debian]

hi all

I am running a laptop that has a Intel Mobile 946GM chipset in it. What
i am trying to do is set up my laptop so that i can have 2 monitors, one
the LCD monitor, and the other, my TV. The only interface that i have
for the TV is an Svideo interface. I can get the dual monitors to work,
but all i can get is cloning, what i want to be able to do is use my TV
as a secondary monitor. How do i do this in ubuntu and is there maybe a
graphical front end that i can use (aside from the one in ubuntu that
doesnt work very well at all)

--cj