Oh, no, I haven't heard from them yet...but I was looking at their financial aid page and it had this on it: "However, if you are a prospective new student, to ensure that you receive information about your eligibility for financial aid when you receive your admission decision, you should apply for aid at the same time that you apply for admission to Georgetown."
That's why I was trying to fill out the form, but haven't had any idea about the GUID.