Switch to a combat spec to lvl him.. then when you it 80 u can stay it for a raid spec or go to a mutilate raid spec or if your into pvp find a spec for that or get duel specs and have a pvp spec and raid spec.
wow the people psting below are probably the gayest alliance ive ever seen/read. Do i go around saying for the horde...no and im pretty sure there are people out there on different servers that could pwn the people you are talking about.
Ner'zhul's spirit is in that sword and it would have to destroyed or he would posses another body.