I been trying 2 connect my wii to the internet but only shows error 51031 and others,please help,thank you?

i really need help on this one,i can't connect my wii to the internet all i get is this error codes(51031,51331 etc)and i been trying for months to connect if u know the answer for that and have the time to do it step by step with me please send me ur IM i will be thankful,thank you.
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