I've gotten tired of having to change my location every time I open my notebook at home or at school/work. So I have adjusted my crontab as follows:
0 8 * * 1,2,3,4,5 scselect School
40 14 * * 1,2,3,4,5 scselect Home
Translated, I have it change my network location to School every weekday at 8 AM (the time I'm scheduled to be at school) and back to my Home location when I'm expecting to be home from school.
Mac OS X Hints
http://hints.macworld.com/article.php?story=20031105133931182