TWRoO on 07 December 2007
When you get a game [in PAL areas] you get a card in it which has a scratch off panel and is for obtaining stars points on NOE website.
You should also have one for the Wii, except it might not be a scratch off panel [mine wasn't]
It's possible you threw them away, as i only seem to have retained 3 of mine [i bought 6 games]... I at least kept the Wii console one, which is worth the most.
Unless it is asking specifically for a serial number, in which case it's on the sticker underneath the Wii.
