Hmm, I would say, like for most others, to contact the admissions officer for the program, however after looking over their website, I cannot find any contact information ... anywhere. But, maybe I just missed something;
Penn State Naval ROTC.
I'm a freshman up there with Army; I'll see if some of my friends have some contact information.
You'd also want to sign up for the Naval Science courses once you go to New Student Orientation - just be sure that the cadre know that you are planning on joining NROTC and you do not have a scholarship .... now if you want to know more about NROTC - kinnem will be more than happy to flood you with information
If you have any questions about Penn State, signing up for courses, which courses/instructors to take, etc feel free to ask.