If your interested in trying out the shard you'll need to connect using the files from the web site.
The RAR file contains everything you'll need to play including the full 5.0.9.1 version of the game as well as the custom maps the server uses.
In addition to that there is also a Decrypted 2D EXE client file in the games folder, this is the file you run to play the game, the login.CFG file is already setup with IP & Port information for the shard/server.
Download the RAR file & unzip it to which ever location on your computer, run the Decrypted 2D EXE file and that's it.