I'm trying to connect my Wii to the Internet. I currently do not have a wifi connection but I have the adapter that connects to the internet. I have already changed the connection on the Internet settings and I keep getting error 52020. Is there another step I keep missing?

You can try this step on how to connect your wii console on internet...

Error Code: 52020 What to do will depend on how you are connecting your Wii console. Please use the info below that describes how you are connecting.

Connecting directly to a modem:

1. Power off the Wii. Connect the official Nintendo Wii LAN adapter to the Wii, and insert a working ethernet cable into the official Nintendo Wii LAN Adapter.
2. Unplug all devices from your modem. Most modems are unable to support more than one device at a time.
3. Power cycle your modem. To do this, unplug the power from your modem and let it rest for 20 seconds. Plug the power back in. Connect the Ethernet cable from your Wii console to the Ethernet port on your modem.


4. If the connection test fails, try a "Manual Setup" with the Wii console (how to), using your network's IP address, Default Gateway, Subnet Mask, and DNS information. To access these settings:
   1. On your PC, click "Start" and then "Run."
   2. Type "CMD" into the field that appears to open a new window.
   3. Type "IPCONFIG/ALL" and press "Enter" to display a list of internet settings, including the settings listed above. Input these exactly as they're listed into the "Manual Setup" of the Wii console's internet connection.
5. If you are still unable to connect and you are using broadband Internet, then your ISP likely uses PPPoE to establish a connection to their network. The Wii is not compatible with PPPoE. Contact your ISP for more assistance.

Connecting to a router:

1. Ensure that an Ethernet Cable is running from the WAN or Internet Port on the router to the modem. Power cycle the modem by unplugging it from the electrical outlet, waiting a moment, and then plugging it back in.
2. Power off the Wii console, and insert the Wii LAN Adapter into one of the USB ports on the back of the Wii console.
3. Run an ethernet cable from the Wii to a numbered port on the router.
4. Power on the Wii console, and run a connection test through the Wii console's online settings.
   
5. If the connection test fails, try a "Manual Setup" with the Wii console (how to), using your network's settings on your PC:
   1. On your PC, click "Start" and then "Run."
   2. Type "CMD" into the field that appears to open a new window.
   3. Type "IPCONFIG/ALL" and press "Enter" to display a list of internet settings, including the settings listed above. Input these as they're listed into the "Manual Setup" of the Wii console's internet connection, except for the IP address. The IP address needs to be different. Add 10 to the IP address and use that number in the Wii console's settings.