Hey there, this thread will tell you how to change your instances into Epic Diffculty (You cannot play through them like Heroic or Normal though)
Anyway to do this you just write this in /s /script SetDungeonDifficulty(3);
When you do this you will get a message saying "Dungeon Difficulty set to Epic" or something like that. You can now walk through the instance portals without "zoning" into them, it's great for ganking)
I am sorry if this is a repost, have fun! :irock: