Hey!
I grew up in Vegas, went to USC, dated someone in Phx for 4 years, and live in LA. ha ha That about covers your territory.
Greek system wise--USC and UCLA have big ones, but are out for summer. (UCLA should be wrapping things up pretty soon if they haven't already. SC's been out for over a month)

Houses are pretty though and worth a drive by.

USC's Greek Row is on 28th Street between Hoover and Figueroa. UCLA's Sorority Row is on Hilgard and most Fraternities are on Gayley.
As for what to do in LA, that depends on whether you are over 21 or not.
Phoenix is about 385 Miles from Las Vegas. Las Vegas is 285 miles from LA and Pheonix to LA is 405 miles. Speed limit is 70-75 for 95% of the way on all these routes. Route 95 is what you take between Pheonix and Vegas. Route 15 to Route 10 Vegas to LA, and Route 10 all the way, Phx to LA.
[This message has been edited by amycat412 (edited June 20, 2001).]