Can’t connect your Nintendo DS to an Apple AirPort Network?

It came to my attention recently that the Nintendo DS seems to have some problems connecting to networks that use a security protocol known as WEP Transitional, they can’t cope with WPA at all.  When you try to browse for networks the DS will tell you that the network has an unsupported security type.  The older AirPort wireless routers from Apple will give you an option to use WEP 128 bit with a 13 character password, but that option seems to be missing from their newer 802.11N routers which means that your only option is to go with no security in order to get the DS to join.  The fix for this doesn’t seem to be documented anywhere, but if you open up the AirPort Utility program and go into manual setup and into the wireless settings tab you will be able see both the wireless mode and the wireless security settings.  If you click on the wireless security drop down menu you will find that WEP 128 and WEP 64 bit are not listed and they are not available with the router in 802.11N mode, so you will have to change the router to the 802.11G/B mode.  If you click on the radio mode drop down menu you will find that it is not an option, but hold down the option key on the keyboard and click it again and you will have an expanded list of options, including 802.11B/G mode.  Select the B/G mode and then you will have the option under security settings to select WEP 128 bit, make up a 13 character password and then you will be able to connect your Nintendo DS to your network and use it to play games online or to browse the web with the Opera browser.