Show Only One Document in the Taskbar
By default, when you start Microsoft Word, each document you create or open appears in a separate window and a button is added to the Microsoft Windows® taskbar. 
Each document is represented by a button on the taskbar.
If you prefer to see only a single window and a single button on the Windows taskbar, as in the following example, 
you can clear the Windows in Taskbar check box on the View tab of the Options dialog box (on the Tools menu, click Options). Note This check box is not available if you use Microsoft Windows NT® 4.0. To toggle between open documents, click on Window and select the document you want. |