I would stop in and drop off a nice copy of your resume. Just say that you were in the area and figured you would drop by a clean copy your resume, just in case the one you sent via e-mail didn't format properly.
Obviously your resume came out fine... but it's a way to start up the conversation and to why you are there.
Otherwise, you really have to walk a fine line between showing interest and seeming too pushy.
Good luck!
"Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather, to skid in broadside thoroughly used-up, totally worn out, and loudly proclaiming: WOW WHAT A RIDE!!!!"