I'm advised by one of us here to post this here:

I sure u all know this new product from Nintendo.
http://wifi.nintendo.co.jp/wap/index.html

I have my own Wifi router that is using WPA2 for security.
All my devices (laptops, desktops, NAS storages, PDAs, PSPs, even Wii) can connect using WPA2 without any problem.

Except NDS. Everytime I wanna multiplay NDS, I need to switch from WPA2 to WEP, then switch back once I'm done with NDS.
This is #$%@ing troublesome. With this Nintendo Wireless Router, I can set it to bridge mode and connect it to my existing router via a LAN cable, and configure it to WEP, so that my NDSs, and my friend NDSs can search and connect to it, instead of my existing router.

The problem is - what if other laptop found this Nintendo Wireless Router (that is using WEP), and decided to hack it and gain access. Will they able to see my network? Will they able to access to the internet?

Is there any better way/alternative of doing this?
Linksys with DD-WRT can do?