Don't do it you'll die. I'll show up and kill you >_>. Actually it is possible but you gotta delete patch.mpq in the data folder in the World Of Warcraft folder and from there run repair.exe etc etc. Either way if it doesn't go over well you can reinstall wow and it might not take as long but then a disc might not work so you'll be stuck wowless o.o So bottom line dont try it unless you KNOW you can get wow back. No one repeat my mistake o.o