Regarding use of a cable with VGA connector at one end and component plugs at the other...
You may or may not get a picture and if you do it may or may not be colored correctly.
For starters the PC must be set to regular VGA, 640 x 480 at 60 Hz.
If the computer delivers the video sync. only via the fourth and fifth cables for which there are no jacks on the TV, it won't work. For component video or RGB inputs with three jacks the video sync. must be combined with the Y.
If the TV does not accept 480p progressive scan, it definitely won't work.
Even if it does, PC video differs slightly from TV video between the end of one scan line and the start of the next. Usually equipment still works correctly despite this mismatch, sometimes it does not and you don't get a picture.
The TV needs an RGB/component setting which you manually set to RGB in order for the color to be correct using computer video.
Video hints:
http://members.aol.com/ajaynejr/video.htm
