GROUPING SIMILAR TASKBAR BUTTONS: When you open more than one document in the same program and then minimize each document, rather that  showing separate icons on the taskbar for each document, WindowsXP groups them under a single icon for that application. If you want to group, or ungroup, similar taskbar buttons,
1.    Right click on the Taskbar
2.    Select Properties
3.    Check or Uncheck Group similar taskbar buttons