To set up the WiFi, you can go into a retail WiFi enabled cart's WiFi menu, and then find the WiFi settings option. Once you have your network linked to the DS, all homenrew/ game backups will use the code saved into your DS. Although there is a homebrew program I think you can use. Let me look around.
Originally Posted by chooka1
DSi (Black) + DS Lite (Crimson/Black) + PSP-1000 + Wii w/52'' Samsung LCD HDTV
PC: E6600 @ 2.4GHz + Intel DP965LT + 4.5GB RAM + XFX 8800GT (OC'd) + 1.07TB Total storage + 21inch Widescreen + Microsoft Wireless 6000 desktop