I was thinking of using a GeForce 6200 with component out for the video. Anyone know if that's a good idea?
I am running an ATI Radeon 9550 with a DVI-to-Component adapter to my JVC TV. I have not used Nvidia cards for cabinets, but from the research I did when I was putting this setup together, I seem to remember that the DVI-to-Component adapter will not work with any Nvidia card lower than a 6600. If you are planning to use one of these adapters, then you will have to either get an Nvidia 6600 ($60) or better, that may mean having to get a new motherboard with PCI Express x16 support, unless you can find an AGPx8 compliant 6600 card.
If you are running AGPx8 and don't want to upgrade the mobo, you can use an ATI Radeon 9550 ($50) or better (9600, 9700, 9800).
You could get some kind of VGA to Component scan converter if you don't want to use a different card. But I remember reading that the quality of these scan converters can vary in proportion to their cost. They run about $100 for an average one to $300 for a very nice one.
If you are going for component video inputs, it is definitely worth it. I am very happy with my setup. The image quality is amazing compared to S-Video. You won't be dissapointed I am sure.