The setup described below is working with a Raspberry PI 2 Model B and Whezzy as Operating System. It is not working with Raspberry Pi 3 and Jessie.
I know that this WLAN dongle is not available anymore but their exists a lot of others also working in monitor mode.
Download latest version of wheezy for PI
If your PI is not direct accessible you can also connect him to your router, check his IP and use SSH (user pi password raspberry)