how do i get my wii online number so i can add ppl adn they can add me also how do i regester i been to into the games to look in and aroung my wii help?

On the channels menu, click the envelope icon in the lower right-hand corner, then click the button to create a new message. The address book is the one on the far right, when you click that it will show your friend code on the cover. Click "register" to add friends either by email or by friend code. Once you have registered a friend, the address book will no longer automatically show the cover (this took me a little bit), to see it agian, press the "-" button on the Wiimote.

I just realized, for such a simple task, this requires quite the explanation.

what does the forums mean

Wii Username
Your Wii Online Username

is that what u nicknamed ur Wii?

Are you referring to the friend code thread?