I was curious if it is possible to run 2 versions of WoW (not simultaneously). I play the real Blizzard online varsion (4.0.1.13205), and am awaiting Cata, but I am also interested in playing on a private server (3.3.5.12340). I guess my question actually is, can I copy my entire WoW folder to a different location on my computer, and make the provate server adjustments to it, and run it from there, without affecting my REAL WoW?