Mere hours after the Wii launched with underpowered composite cables -- not even Y/C -- the distributed minds of the internet have figured out how to mod that connection into component; members of the NFG Games forum pulled off this smooth hack. Nintendo says its component cables are on the way, but can you just sit patiently and hope to buy them soon? 480p waits for no one.
The Wii end of the in-the-box cable doesn't have the full pin-outs that make the Xbox 360 cable a delight to mod. But, Macgyver it up a bit -- "acem77" on the NFG Forums used paper clips -- to add new pins. Follow the forum thread or wiki for signal and construction details.
See also: Add VGA to standard Xbox 360 cable
[Thanks, Vince Vu]