I am betting that this post will get you where you need to go.
http://www.osticket.com/forums/showthread.php?t=2947&highlight=time(http://www.osticket.com/forums/showthread.php?t=2947&highlight=time)
Don't be too afraid of the PHP.... I don't know hardly any PHP and have managed to do a whole ton of MODS from reading the forums here.
