How do I play flyff without the internet using private servers?

How do I do it... if it's impossible, how? Please give me the steps... Need it fast!|||You have to set up the server and run it yourself, then connect to 127.0.0.1 with the client.|||Umm that's impossible, It's a online game no matter if its private server or not|||Flyff sucks. Just play World of Warcraft