A:
what you want is a TV-Tuner. i recommend this one:
http://www.newegg.com/app/viewproduc...ption=tV2000Xp
comes with remote and FM tuner. will let you watch TV, etc..

B:
RCA jacks: Red and White are both audio cables.. yellow is the only video, and you don't need it. with that TV tuner, you will be able to use your monitor as a TV and be able to play games (i asume you mean console, like PS2, Xbox) on it.

C:
the one i recommended is the best i've seen for that price. i've got an ATI Tv wonder, and it blows the big one.

other things:
lucky you, that card comes with everything you want

$55 at newegg.com