DAOC is an old game, but people still play it. There's a new feature in HotkeyNet that lets you run more than two copies of the game on a single PC. (This will probably also work with other games that have similar restrictions.)

I checked DAOC's rules and this doesn't violate them, so far as I can tell. This technique doesn't hack the game in any way or even affect it directly. It only deletes some temporary objects in memory that belong to the operating system.

Instructions: Put the following hotkey in your hotkey file. Each time you launch another copy of DAOC, just before you do it, press the hotkey. That's the whole story.

Code:
<Hotkey F1>
<SendPC Local>
<KillMutex \BaseNamedObjects\DAoCi1>
<KillMutex \BaseNamedObjects\DAoCi2>
For more information about the new KillMutex command, click here.