Using Tv as second screen - not all shows?

10-11  Source: Network gathering  Views:0 

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I have to do a presentation of some stuff that's on my MBP (original) and there's a big Sony TV in the room. I can connect using the DVI, but I only get the photo from my desktop - not the program or any icons. Do I need to shut my screen off? If so, how? Is there a setting I haven't found to do this?
Also, the mouse cursor could travel to the TV - do I just need to drag the program screen to the TV?
Stedman, thank you. I'll try that as soon as I get back there.
Is there a displays preferences other than the one in system preferences? That one only has resolution choices and number of colors choices - not arrangement or anything else. There is a "detect displays" button, but it didn't seem to do anything.
Hopefully, dragging the program over will work - thanks again Stedman - I was hoping that was possible.
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