I downloaded AucTeX off of M-x package-list-packages
and I've enabled AucTeX in my .emacs with
(load "~/.emacs.d/elpa/auctex-11.86/tex-site.el" nil t t)
When I type C-c C-c
I would like to by default generate a pdf with pdflatex instead of a dvi with latex. What's the easiest way to do this?