HD Monitor set-up help required!

Hey, I brought an LG monitor/TV, it's about 19", not sure of the model number exactly, but there's a problem.

I have a 7900GTX, and it came with an S-Video attachment for the card. This attachment allowed me to plug component cables into the back of this S-Vid attachment (so that it could then go in the back of the card), and then into the back of the TV.

My problem is that a lot of webpages, and some fonts on games are colliding/out of sync/totally unreadable. Take Hotmail, for example, it's totally illegible unless I set it to ignore font sizes on webpages.

Also, when I start a game, it sets my desktop to it's own resolution, and I cant always select the right one. It seems to be a disagreement between Control Panel, nView and the game.
Trying to resize the desktop also leaves with with massively obscure resolutions, unselectable in games.

So...any advice on;
A) How to set this up properly?
B) How to fix it?

Thanks.

(P.S. Im usually trying to run in 1080i (I think it's i, not p).