you can't do 1600x900 on a s-video cable, that only supports up to about 800 x 600
if you want larger resolutions, you'd have to use a dvi or rgb output, but there aren't many regular tv's that accept it. the newer HDTV's and projections have the inputs for rgb or dvi or hdmi, so they can do the 1600x900. Just some advice, if you want to buy a HDTV to use as a monitor, don't buy a sony, they rarely do the job correctly
if you want larger resolutions, you'd have to use a dvi or rgb output, but there aren't many regular tv's that accept it. the newer HDTV's and projections have the inputs for rgb or dvi or hdmi, so they can do the 1600x900. Just some advice, if you want to buy a HDTV to use as a monitor, don't buy a sony, they rarely do the job correctly