Here are the links to 2 UofAz rush threads from fall 2003... one NPC group has left campus since then.
http://www.greekchat.com/gcforums/sh...ad.php?t=37563
http://www.greekchat.com/gcforums/sh...ad.php?t=38197
Recruitment seems to be, to someone who doesn't have a chapter on campus, to be fairly competative ... althought not nearly as competative as recruitments are in SEC schools.
Here's the link to the greek life web site ... it has lots of relevant information
http://www.union.arizona.edu/csil/greek/index.php
drop me a PM if you have any specific questions and I'll try to answer