buy an Xbox lol,
make sure you entered the passwork/ wep key correctly and makesure your internet router is a high speed correction
Nintendo's answer- "Likely cause: It appears that the security settings entered into the Wii console are not the same as what your wireless router is set to allow, or your router is not able to assign the Wii an IP address.
How to fix: Make sure the security key and security type are entered into the Wii exactly as they appear in your router's settings; manually assign an IP address to the Wii"
On the nintendo website (http://funadvice.com/r/14sp9k4bedd) they have a list of router brands once you click on them it allows them to tell you how to connect it. or underneath it tells you how to do it manually.