Ok, I'm VERY new to mac and osx, and I was trying to drag specific utilities to a stack. I was able to drag them over and then decided I didn't like that set up after all so I removed the stack from the dock. Now the utilities that I had put in that stack are missing all together. I was able to search for, find and move terminal back, but things like airport utility and disk utility seem gone gone. Please say I didnt really screw this up!