I would take special care of the subject line too. Put your name and the school so they can find it no matter what they are searching for.
Also, this is GREAT advice I received from my current PI. When you send somebody your resume DON'T save it as resume.doc. Professors have hundreds of documents called "resume" and you want to be sure they can find yours later. Also, save it as a pdf instead of a word file to preserve formatting and avoid underlining of any words (names, places, projects, etc), that their computer will say are misspelled.
resume.doc
Mojingly Resume 2011.pdf