ahh i see, the regular stereo av cables i think do not give progressive scan, besides, component cables are a lot better anyways, plus they HAVE progressive scan and they give a 480p progressive scan value allowing for a clearer picture.
Component Video Cable
Almost all modern HDTV’s use this to input a progressive scan signal. These cables do the exact same job as the D Terminal cables, but are much more popular. Gamers who have this will be able to input a 480p progressive scan signal, which gives you an overall better picture. Audio cables will be required to be used from the analog output on the back of GameCube.
S-Video AV Cable
These cables should be familiar to everyone that's owned either a N64 or SNES (Super Famicom), because they are the exact same kind of cables! These cables offer a clearer picture similar to component video cables, but they don't have progressive scan functionality. Nintendo will most likely not include these with the sale of the GameCube.
Stereo AV Cable
These cables should be familiar to everyone that's owned either a N64 or SNES (Super Famicom), because they are the exact same kind of cables! These are the most standard AV cables and work on almost all TV sets. With past consoles Nintendo has included these in the package, but whether they do that this time or not is still uncertain.