coverfloader covers and fix
for covers i use wiitdb <--Cut and past /google at that site you can search covers
2nd depending on what usb loader your using,(i use coverfloader) and if you use it and have trouble seeing the images this should fix it for you.
get your covers / full /disc, covers install in you directory on you sd card, heres the big thing to make them work for Coverfloader go into the options in coverfloader / paths make sure that the paths are not in capitol letters hence SD:/covers should be sd:/covers
if it helps let me know