If you are using Windows 7 (and maybe Vista), you could try messing with NTFS junctions.
Move your quests folder from C:\EQ\quests to C:\Open\quests, then in a command prompt, create the junction:
Code:
C:\EQ>mklink /J quests c:\open\quests
Junction created for quests <<===>> c:\open\quests
Then any request for a file in C:\EQ\quests should be redirected to C:\Open\quests
Just Google NTFS junction, or Windows Junction for more info on their use. They look very similar to symlinks in the *nix world.