OK, so I'll see if I can download the covers through wii backup manager, if not I'll download them from one of the numerous cover sites posted on here and just save them in the right place with the right name on the SD card and see if that works.
I'll let you know how I go.
I appreciate your help!!!
The Wii can't 'auto update', by the way. There's not a problem in connecting the Wii to the Internet.
It MIGHT ask you for an update if you decide to connect, keeping you from accepting the EULA. Just go into ARC and set EULA to Read.
You can then connect, and it will do a connection test after you set up the connection.
After the connection test, it will ask if you'd like to perform an update. Just press no.
You'll be connected to the Internet perfectly.
I had assumed he had it in the first place.
Thanks for your help guys, it was pretty simple in the end, just needed nudging in the right direction