Comment Cerberus Helpdesk (Score 1) 80
We use cerberus at work. (University)
http://www.cerberusweb.com/ http://www.cerberusweb.com/free_version.php
RT is nice too if you got peeps that will work with it to make it work for you.
If imprinted foil seal under cap is broken or missing when purchased, do not use.