Microsoft Word 2000/2003:

In Word select View, Toolbar from the menu bar and mark The Raiser's Edge toolbar.  If The Raiser's Edge is not listed among the available toolbars, first close Word and then click the Word icon within The Raiser's Edge record to open the Word document.

Microsoft Word 2007 and Microsoft Word 2010:

Click Add-Ins on the toolbar in Word and select the option to insert Raiser's Edge fields.