How high should sharpness level be set on lcd hdtv?

Q. We just had our LCD HDTV installed yesterday. It's a Samsung 40 inch. The HD channels look great. The non HD channels look good too but are a little blurry when up close to the TV. Will increasing the sharpness level make the picture more clear or is it the opposite? It was set up at 25% I increased it to 50% and I can't really tell if it's better or worse.
Thanks

A. It all depends on how noisy the signal is. If you have a really clean signal, you can run the sharpness up quite a bit before you'll see negative effects like edge ringing and graininess.

I'm getting my digital signal over-the-air (antenna) and the signal is so clean that I can max out the sharpness and it still looks great. I generally leave it at about 75%. I'm viewing the shows on an older non-HD CRT. The situation might well be different on an HD set.

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How do I get better resolution on my HDTV using my ATI 9700 computer video card?

Q. Ok, Here is what I got. I have an ATI Radeon 9700 video card, in a computer that I built using spare parts from my friends Alienware. I have it hooked up via S-Video cable to my TV which is a Samsung 50'' LCD HDTV. My problem is that even though I am running the latest drivers, the resolution on my TV image (which is a clone of my desktop) is just terrible. I have a friend with a RCA LCD 52'' hooked up in much the same way ( except he uses VGA, an option I don't have), but his picture is crystal clear. Is there a setting I can change to repair this? Or is my friends LCD just a better TV for this type of connection? Or are my dreams of having as crystal clear 50'' HD image to play Call of Duty 3 on just a bit too lofty? Should I try to upgrade to Vista (grrr) or just stick with XP Pro? Any advice, good or bad, would be much appreciated. Thank you!!
I mentioned that my TV is a Samsung LCD, it is actually a DLP... if that affects anything
also my TV runs at 720p... I have a converter piece to transfer S-video to regular video cable... I assume that won't help. ATI sells a piece that I can attach to my VGA output to transfer to component output, $30.... worth it?

A. First of all, I would recommend making your computer's video resolution the same as the native resolution of your TV. Generally the resolutions are 1280x720 for a 720p TV and 1920x1080 for a 1080i/p TV. If you using a different resolution your TV is having to scale its display to match that resolution. Another thing I would try: use component video cables or DVI to connect to your TV, if that is an option on your video card/TV. They will provide a higher quality picture than your s-video cable.

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