Oops, yeah 480p . Component cables for consoles aren't the standard video cable with the wii-end of the cable. The Nintendo brand cable (~$35) is good since it's guaranteed to work well IMO. Vendor component cables could work too I guess as long as it's not super expensive and still works reliably.
Btw, for audio/video stuff go to www.avforums.com. Mention Bose or Monster and see what kind of replies are posted, yikes!