To add any hacks to your iliad, you will first need to turn it into a developer iliad, that is enable shell access.
You can request it here:
https://myirex.irexnet.com/user.php/developer after the next software download, your iliad will allow you to execute shell scripts.
HOWEVER, be aware as this page tells you it will come with dangers. That is software-destroying your device. Unfortunally once you or any broken application you install renders your device unbootable, there is no way to repair it again, but have to send it in (and pay for that). There isn't a feature like a PC where you can insert a recovery CD and whola, it works again and you just lost your data. (Hint: at iRex PLEASE add something like that!
)