I am looking for a way to keep a master maillist, but then break that list down into sublists each on their own worksheet. I want to be able to update the master sheet and have those changes appear both in the master and the corresponding sub sheet. I was looking at some tutorials dealing with lookup and vlookup (not sure what the difference is between those two yet) and thought that might work, but I suppose I would need to add a column to the master sheet with a unique identifier for that to work?