This is appearantly a common problem with the Wii. I got this information right off their
Support Website.
Error Code: 50231
The Wii console's internet connection settings have not been configured yet. In order for the Wii console to connect online, you must first go through a quick setup process to connect to your home network.
If you need assistance, we can walk you through the process using our step-by-step guide that allows you to follow along. Please
click here to begin.
I hope this takes care of your problm.
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