It is interesting. I just had to call a friend of mine to warn him not to order one of the VGA boxes. There are several versions from different companies, but they all work off of the standard red/white/yellow RCA cables. That yellow line is not how you want to connect video to your computer monitor, if you want to do it at all.

The appropriate solution for good quality video is this: a modified component video cable, such as this one. And also, if you need it, a gender changer in order to connect it to your computer monitor. The drawback is that this will only work for GameCube games that support progressive scan. There is no way to get non-progressive scan games to display on a computer monitor with any sort of good picture quality.

And let me tell you, the VGA box solution is not good quality. I wish I had done this research before buying it.