I recently bought Okami for the Wii. I went to the Capcom website to register it, but was unable to as I did not have a registration code on the back of the instruction manual (where Capcom says it is). I could register Tatsunoko vs. Capcom because it did not require a code curiously. I'm sure my particular copy is unregistered. There was also nowhere for me to register my copy of Resident Evil 4: Wii Edition. These days I try to register all the games I own. Does anyone know what's up with these product registration codes?