RKill will only terminate processes which are known to interfere with Anti-Malware/Virus utilities.
If it isn't terminating anything, it means that none of the processes it is looking for are running.
It seems the guide you are on assumes that you are using an infected machine, or at least have access to one to follow the steps.
If you're running this on a clean machine, RKill and most AV's should come back clean, which is generally a good thing.
The steps listed within that guide are just general strategies for removing an active virus.
Edited by akaUriel, 17 July 2012 - 01:36 PM.