TO PLAY ON THE CUSTOM REALM
To play on this realm, you must patch your Diablo 2 (classic or expansion) game to 1.11 or newer, and download and run the odins_realm.reg registry file here. You will now have the Odin's Realm server in your game list, and can connect like normal.
Remember to create an account either in game, or using the web tool. Have fun!
Keep in mind that the registry file above will remove any other custom servers in your list - use a Gateway Editor to custom edit your list with the below information if needed.
Manual gateway settings:
Server name: Odin's Realm
Server address: bnet.odinbsd.net
Time: -4

Diablo 2