If you use the Nintendo LAN adapter, just plug it into the Wii via usb port and plug an ethernet into it and your modem--this is for a wired connection. For wireless--you can go a couple ways (1)get the Nintendo wifi dongle and hook it to your computer usb and follow installation instructions for wifi install (2) if you have a wireless router, search for the Wiis wireless capability (no adapter needed. Hope this helps you, I understand the confusion as it took me a bit to get down as well. Call Nintendo if you have error problems! This is the easiest way to combat this and is usually a simple fix.