Facebook Ettiquette Question:

Okay, say I just happened to find out that I gal I had quite the crush on during college is on Facebook. And say that she happens to be in my town, as luck would have it. And say that the last time I talked to her was on graduation day, 5 1/2 years ago.

A) Should I friend her?
B) If so, how should I go about it?

EDIT: After a couple of days, she accepted my friending. Now I have to worry about the messages...