You could try what you have mentioned but you still may have issues. You didn't say what your TV has for hook ups, S video, VGA composite, etc. Also video aside, what about audio? Neither S Vid nor VGA carry audio. Some use a ROKU set up for similar purposes(with the internet) but it sounds unlikely that your TV is capable of doing such. The best hook up would require a total uprgrade of both L/T and TV utilizing HDMI hook ups that carry both audio and video signals, again a pretty heavy upgrade from what you are attempting to use.
As of the moment I'm running Windows XP media-center edition on my laptop (HP Pavilion dv9000) that has a s-video port. My TV is an old Magnavox RR1333 C403, I don't have cable connected (it's not that I can't or don't have it, just that I prefer digital over the air channels) I run an Apex DT250A Converter through a VCR (it gives me more RF connections of which the are none integrated in the TV, just coax.). The converter has a smart antenna and s-video connection, what I want to know is will s-video run both ways(input/output) or just one way. And if both, will it fry my laptop or any of the other devices I mentioned?
PS: For those that know what a smart antenna is like, would it be worth getting?