In order to make IPX work you must:

- Have Dungeon Keeper Gold or, if you only have the original Dungeon Keeper, download the Win98 IPX Patch and patch the game.

- Install the IPX Protocol. To do so, you must go in your Network configuration window and click on "Add...". The protocol should be in the list and you simply have to add it, Windows will install it automatically.

See Dungeon Keeper over hamachi for full info on how to get DK multiplayer working.