Type in the correct locations of the programs shown.

You can download dot.exe free from http://www.graphviz.org/

Location of your word processor: 
C:\Program Files (x86)\Microsoft Office\OFFICE11\winword.exe

Location of Excel or other spreadsheet program:
C:\Program Files\Microsoft Office\Office11\excel.exe

Location of Paint or other graphics editing program:
C:\WINDOWS\system32\mspaint.exe

Location of dot.exe, part of ATT GraphViz software:
C:\Program Files (x86)\GraphViz\Graphviz\bin\dot.exe