Attention this is not so simple

After some research I gathered some tips:
/! \ DO NOT RELY ON THE CABLE COLORS! Although the catch is the red-white-yellow, it is not done to plug the cables of the same color! Just think a bit, the red and white jacks are for audio or VGA jacks are not output sound (as it is for video)! I deduced that in reality these jacks are for connecting anything else. Caution electronic session:

-The Yellow cable out of your Wii (or other) COMPOSITE out a signal, which means that the primary components to the color (Red, Green and Blue - English RGB) pass through the same cable!
-an Outlet VGA expects to receive not a composite signal, but a COMPONENT signal (component signal in English), which separates the three colors at three different channels (ie three different cables)
-There Are actually TWO kinds of component signal, like those who are taken for VGA pass the three colors on three signals, and those who do not put colors on three colors of cables but DIFFERENCES two cables (chrominance) and the third cable BRIGHT (brightness)
-The Connectors labeled YPbPr connectors (also called YUV connectors) just used to transport video over three cables, two for chrominance and one for brightness. These cables are green, blue and red and are RCA connectors (the connector compatible with the sockets of this article). This is exactly what offers the Wii for example, if you buy the adapter named "Cable YUV Component Video & Audio Wii". Bingo?
-not So fast! there is ANOTHER TYPE CONNECTOR RCA which is also but offers directly to an output with a cable for red, one for green and one for blue, exactly the signals expected by the VGA jack! BUT, this connector also separates the vertical sync and horizontal sync, which makes a total of five cables. But this article has only three jacks ... It is not a priori what we need, and fortunately because this kind of cable does not really exist ...
-Last Thing: S-Video jack is yet another type of connector: Two pins are used for the masses, a pin for brightness and chrominance pin for a bit ... It joins the YPbPr component signals, a priori we can pass from one to the other ...

In summary, if the description of the product is right, we have:
-FM OUTPUT: VGA socket that handles video with a COMPONENT RGB signal and therefore waiting three separate signals
-FM ENTER: either an S-video jack that handles the video component with one hand, a luminance signal and the other a chrominance signal
-FM ENTER: Either three RCA jacks, which, according to my deductions, manage or YPbPr component cables either directly as RGB component cable for VGA (but unlikely) ...

The question is: are we can go from one type of luminance signal / chrominance at a RGB signal type?
In searching the net, everything, especially anything, but it seems that it is quite possible, if the display supports that. We must now ask whether this article handles this conversion, or if he does not! Apparently people were able to connect their Xbox on their screen with this article, so I guess it should work well ...

CONCLUSION: I have not done all the tests that I want, but it appears that:
-A Priori, this article makes sense S-Video / three jacks (input) => VGA (output). It is therefore not the place to get your PC to a TV signal, but rather to bring out your TV signal / VCR / game console TO PC screen!
-If The S-Video jack works, then this cable SHOULD handle the conversion signal component YPbPr => RGB component signal, and the three cables used to transport YPbPr signals. You therefore would have more A PRIORI (AND TESTING) to buy the "Audio & Video Cable Wii Component YUV" if you want to play your Wii PC screen!
-Otherwise, Well I do not know what good this cable ...

I will soon (July 2013) to precisely test the "Audio & Video Cable Wii Component YUV" I will go back quickly to be able to finish my findings! And perhaps increase the note I have assigned ...

EDIT: Well finally bah any of my tests have worked! So the only remaining possibility, and I did not test is the S-Video jack, to the wise ...