Conquest of the Horde

Heya everyone and thanks for taking the time to read this! I am looking for a way to play the retail PTR without updating to the point of not being able to play CotH anymore. The people ingame said i need to have 2 wow folders... but I am not sure how to get to that point. If someone could post a reply or maybe send me a PM giving me the step-by-step. I'd appreciate it so much! Thanks again! <3 <3 <3

Go to Program Files or wherever WoW is saved, find the folder, right click and Copy it. Then paste it into the same directory. Wait a while for it to finish, and voila: Two WoW folders. Call them whatever you like. My CotH WoW folder is called 'Visual', for no particular reason. Patch one up with the launcher, leave the other as-is to continue playing CotH.