I recently tried to figure out a way to open more than one instance of Guild Wars. The solution I found was using a Hex editor and editing the registry. Maybe something like this would work for DAOC? http://www.guildwarsguru.com/content...ars-id1837.php

Be sure to backup your game files before trying something like this, though! Don't know if it will work, but it's worth a shot if you can't figure something else out.