Oh okay good. I really can't say honestly. I don't know if Nintendo has a compatibility list like xbox live does or not. I think it's designed to just "work" with any 802.11b frequency but can't guarantee that statement at all.
Perhaps search around on wiichat.com or something like nintendo.com in their forums and dig up any info if there is any on connectivity issues. Also- perhaps try just contacting nintendo directly and asking "hey, should this work with my stuff"?
I know for my DS it didn't work unless it was setup perfectly, the Wii was the same way. 4x mode on the router had to be disabled, it had to be a WEP key, it can't authenticate with WPA at all. I had to make several changes to the routers output as well, less on the output rates, 1-2mbps vice "auto" and some other stuff. I forget where I found that info out at, but if you look you'll find it like I did just as well I would think. I had to make several changes. Also- the channel had to be different. It did NOT work on channel 6 (routers usual default) so I made it channel 1 or 11. Either of the 2 extremes.
My best advice is find the router config crap for the nintendo systems like I did and you should be good.