your monitor is working it is just output the computer screen output thru the s-video card. but your TV cannot display the computer resolution.
I did that once too.
you have to have multiple monitors on the drag menu selected.
play a dvd or movie thru windvd or whatever and it should work but the computer monitor may be blank. like I said earlier you have to have mulitple monitors slected under the drag menu.
select 2 and play the movie and you will see the movie on the comoputer screen and your TV at the same time.