updated wii AirPort instructions:
1. Make sure you're connected to the internet via something other than the AirPort card (i.e. Ethernet). Also, make sure AirPort is on.
2. Turn on Internet Sharing:
* Go to System Preferences, click on the Sharing icon, then click on the Internet tab.
* Change the Share your connection from: pop-up to 'Built-in Ethernet.'
* Under the To computers using section, check the AirPort box.
* Click Airport options...
* Enter an easy name such as wii. Leave all the security options blank -- implementing security is an exercise left to the reader -- then click OK.
* Click Start in the Internet Sharing panel.
3. Gather Information:
* Open Terminal.app and type ifconfig en1. In the output...
* Look for: inet xxx.xxx.xxx.xxx netmask ...
* Take note the IP Address associated with the first inet, negating values after the # (mine was 10.0.2.1; yours may be different).
* Type dig. Near the bottom of this output will be SERVER: followed by an IP address. This will be the DNS server you will use for your wii.
4. Configure the wii:
* Select a connection to edit.
* Choose Manual Setup.
* Enter the following parameters:
* SSID: wii (or whatever you chose in step one)
* Auto-obtain IP Address: No
* IP Address: Take the first IP Address you obtained earlier, and make the last digit different. i.e., mine could be 10.0.2.4 (10.0.2.1 was original)
* Subnet mask: 255.255.255.0
* Default router: The original IP Address, unchanged. (10.0.2.1)
* Auto-obtain DNS: No
* Primary DNS: your DNS SERVER from the dig output.
* Secondary DNS: leave as 000.000.000.000
* Test your connection at the top of the screen. hope it works