try this one out..
reset ur router to factory default..
to do this, u must have a ballpoint pen
1. poke the pen on that reset button on ur router and hold it there for 10 seconds while the router is on.
2. go to 192.168.1.1 in ur internet explorer
3. add encryption for security.
4. try if this works on ur wii now.
5. wish it works
6. good luck hope i helped ^_^
i have the same one but it worked fine for me
i have verizon and the same router.
please rep if u can