Installing NaviX and Icefilms Just with Apple TV and the internet

I’m not a computer expert. I was able to install successfully the season pass and the fire core software and I’m happy with all this features! now I want to see NaviX or Icefilms on my Apple Tv. is there is a way to do it with the Apple TV using the Nito TV or the browser alone? Or I need to plug the Apple TV to my Mac to do a Hack-kind-of-work to be able to doit?

please help me. a step by step guide will be great!

You need to install the packages through XBMC by ssh.  

Thanks. I found out a video on youtube and now I got NaviX, Icefilms and Bluecop repo! This is great