Hi we have opened a new Cover Art site for the Wii, the site is FREE and no need to register, we have a massive selection of covers, but if you have some we dont have then feel free to upload them, we would like USB loaders to use our site, we have set the site so that this will be really simple to incorporate into your Loaders, you can find the site here

Muntrue.nl | Your home for Wii boxart

if you feel you can help out in any other way let us know, thanks