problem connecting laptop to monitor

Hi,

I have a problem with my laptop.

I gotta laptop Sony Vio, and when I connect it

to TV monitor or to computer LCD screen, I see

the picture of my laptop, and everything is working,

but if I open a DVD movie with WinDVD program, it runs

in the laptop, but not in the screen.

what is the problem ?

thanks anyway.

why to threads? also more infomation, Are the cords working? in the right way?

You need to set up the monitor to preview on the TV.

Right click on desktop, properties, settings, and click the 2nd screen. Screen should flip to the TV one.