@fishsticks255 In case you don't find sgunhouse's post helpful....
When you get that huge window that can't be moved or resized, look at the left side of the title bar for the window. Put your pointer up where it says "Save" (or "Open" if you're getting the huge window when you're trying to attach a file or something, as I was) at the left side of the title bar, and then double click. The window will resize to a smaller size, and will once again be adjustable like normal.