<Component Id="_productComponent Guid="*">
        <! A File's Name element is its name in the Target directory.
           As it is the Target directory, will need to know where to find
           it, hence the Source element.
        <File Id="_fileAFirstFile"
              Name="AFilrstFileInstalled.txt"
              Source="Files\AFirstFileToInstall.txt"
              />
      </Component>