Since I don't know, if anyone already tried to setting up the zone, I will tell you, how you can implement the Zone to an already existing server.
First of all, you have to go to your 9Data-Folder and create a dir called "ServerInfo", and copy your "_ServerInfo.txt" in there. Then you change to the zone from Aqua's Release and step into their ServerInfo's dir. You have to alter at least the line with the include, which should look like this, after you edited it:
Code:
#include "../../9Data/_ServerInfo.txt"
The last thing you have to do, is creating the service by executing the Zone.exe as always.
And yes, I'm aware that's possible to alter it into the Zone.exe by hex-editing it, but I didn't wanted to alter it.