On your Wii go to Opera click www. Type in speedguide.net . hit enter.
On the lower left click TCP analyzer. It will open another page with a list of
what your current MTU,RWIN,BANDWIDTH DELAY ETC is set at.
You will see the RWIN is ridiculously low and cant be changed and a few other things. Interesting to some of us nerds and nerdas.
You can do this on the pc also.
Test the Wiis speed while you are there.
Then go to speedtest.net and test the Wiis speed. It designed just for the wii.
Attached is mine but for my pc.