Connecting a Nintendo DS to the internet using a built in airport card

Exactly how are you trying to connect? What are you connecting to? A Mac with an AirPort versus AirPort Extreme card? Or are you connecting to an AirPort Base Station(ABS) or AirPort Extreme (AEBS) and if so, which one? Graphite, Snow, Extreme(g), Extreme(n-Fast Ethernet or Gigabit)?

FWIW, my sons' DSs can connect to both an AEBS(g) and AEBS(n-FE), but ONLY if WEP or no security is used. The DS doesn't support WPA. The Wii has no problem with WPA.

I tried finding that information from MacOSXHints, but I couldn't find it. So, I'm not sure what those instructions are. But, as others have posted, you might be better off getting an inexpensive router.

Let's double-check your Internet Sharing settings ...

To setup for Internet Sharing (Wired to Wireless):
Enable Software Firewall
System Preferences > Sharing > Firewall
o Click Stop to start the software firewall

Setup the Network
Cable Modem > (Ethernet cable) > [Ethernet port] iMac > (wireless) > Nintendo DS

Setup Port Order
System Preferences > Network > Show > Network Port Configurations
o Verify that "AirPort" and "Built-In Ethernet" are enabled.
o Verify that "Built-In Ethernet" is at the top of the list, followed by "AirPort".
o Click "Apply Now."

Configure the Internet Connection
System Preferences > Network > Show > Built-In Ethernet > TCP/IP
o Configure IPv4: Using DHCP
o Configure IPv6: Off

Enable Internet Sharing
System Preferences > Sharing > Internet
o Share your connection from: Built-in Ethernet
o To computers using: AirPort (checked) (Note: Uncheck all other entries in the list.)
o AirPort Options
oo Network Name: <anything you want>
oo Channel: Automatic
oo Enable encryption (using WEP) (optional)
oo Password: (optional)
oo Confirm Password: (optional)
oo WEP Key Length: (optional)
oo Click OK
o Click Start

David,

I found that information from MacOSXHints, and it seems pretty straightfoward. And you really don't need to use Terminal, as all of the information you need can be obtained from the *Network Utility* in your Utilities folder.

Simply setup your Sharing as per the MacOSXHints' instructions.

So, following the MacOSXHints' instructions, you would enter the following parameters into your DS:

SSID: Whatever name you gave your Network Name under AirPort Options, in my case iMac G3
*Auto-obtain IP Address*: No
*IP Address*: Using your Mac's en1 IP Address, as show by the Network Utility, and make the last digit bigger (i.e., xxx.xxx.xxx.xxx+1), in my case 10.0.2.2
*Subnet mask*: 255.255.255.0
Gateway: Your Mac's en1 IP Address, in my case 10.0.2.1
*Auto-obtain DNS*: No
*Primary DNS*: Your Mac's en1 IP Address, in my case 10.0.2.1
*Secondary DNS*: Your Mac's en1 IP Address, in my case 10.0.2.1

Using my sons' DS, I tested the connection and it worked. Heck, even my iPhone connected to my test iMac, Mac OS X 10.3.9, with no problems.

So, I hope this solves your problem.