For christmas I received MarioKart DS, and one of the first things I wanted to do was get online with it. But since my wireless network was WPA I had to change my router to WEP, which I did not want to do. So I had a Dlink DI-514 laying around with hopes to use this wireless router connected to my linksys router so i could keep WPA with my computers and use the Dlink with wep, to only serve my DS. Sadly the DI-514 was on the "incompatible" router list on nintendos wifi site. So with some searching I found this http://forums.nintendo.com/nintendo/board/message?board.id=general_wifi&message.id=23873&page=1 Tried it on my router and Tada it worked. To the point It might work on other routers aswell so if your router isint compatible with your DS, try the following In the advanced wireless settings of your router change the; "Basic Rates" to 1-2Mbps and use a Long Preamble. The reason the DS doesnt work with my router atleast, is that the router is not scaling back to the 2Mbps speeds that the DS uses. Also note that changing the Basic rates wont affect the connection speeds of your wireless computers. i.e If you have a B setup youll still connect at 11Mbps. Anyways give this a try, good luck.