Go to Download section to Download the Client.
Next> Download the Latest KRO or Sakray (Dont download if you have)
Next> After you download the Client, double click it and save it to your ro folder.
Like this:
"C:/Program Files/Gravity/RO"
Next> After you install, go to your RO folder and Click the ShowtimeRO Updater
Next> Patch the Updater. Wait for a few Secs then...
Done.. You can play now..