The present invention provides a three-dimensional user interface for a computer system that allows a user to combine and store a group of windows as a task. The image of each task can be positioned within a three-dimensional environment such that the user may utilize spatial memory in order remember where a particular task is located. In further embodiments of the invention, the three-dimensional environment includes a stage, which is used to display the task with the current focus. When a user selects a new task in the gallery, the task is moved to the stage and given focus. If a previous task was on the stage, an image of the previous task is captured. This image is then moved into the task gallery away from the stage. This process allows users to switch between multiple window configurations with a simple action.