1. I think there's a DOS utility somewhere that does that.
2. If your card is "Made by ATI" it'll be the same, if, however, you have a "Powered by ATI" (ie third party card with the ATI chipset) card, a new "Made by ATI" card will probably look lots better.
3. It'd be cool, you'd end up with a U3100 type display, not good for general PC use, but OK for MAME and games.
4. Yes, you need a good TV-out card and good quality cables.
5. Yes, most newer Radeon cards can output component video with an adapter. With most other cards you need a converter from VGA to component.
6. Probably, not me though. DVI would likely be best, with VGA a close second.
7. 'RGB Component' is like 'Yellow Composite'. The only thing RGB about component is the colors of the cable ends used.
8. No clue, sounds interesting
9. Because you want one.

10. They do, in Europe. They call them 'TVs', and the RGB connector 'SCART'