From OHRRPGCE-Wiki

You don't. Not with the OHRRPGCE, anyway. The OHR is designed for making single player RPG games, and contains no networking features. We do not have any plans to add such features.

But fear not, there are other programs that might meet your needs.

[edit] See Also

• Alternatives
• Stendhal
• The Mana World
• Graal (Not Free)
• Planeshift
• Worldforge
• Game Maker (generic, but has online features)
• Multiplayer Game Engines @ Google
• Multiplayer RPG Engines @ Google