I used Excel - set the column width to something near 2 and you can
use a different color for each process and/or use the "borders"
function to draw lines around the cell(s). Then you can type the
process number inside the color / border. When finished, cut & paste
into Word.
I believe Visio can be downloaded by "MSDN Academic Alliance Program"
free download for IIT CS students (I downloaded Visio like 2 years
ago), but my preference for this assignment is Excel.
Below is the link for IIT MSDN free downloads:
http://msdn03.e-academy.com/elms/Storefront/Home.aspx?campus=iit_cs