http://www-rohan.sdsu.edu/dept/dg/
Hi there!
The address above will take you to the DG website for State's chapter. (I don't know how to make it a hyperlink, sorry.)
There's lots of great info on there. I don't know any DG's at your school either but I'll probably be asking some people who will know next week so I'll keep you updated.
Mainly I'd also recomend going through Fall Formal Rush. Who knows? You could walk into one of the other houses and just fall in love with that chapter and be like DG Who? instead of DGWhat?
Good Luck and remember to keep an open mind!