My school counselor does not even know my NAME (applying to University of Chicago)

"The problem is that my school counselor does not even know my NAME! How is she going to write a rec. letter about me, and she doesnt even know that I do exist!"

Ok. So just fix the problem, talk to them, schedule a meeting.
Don't be anxious. It's bad for your thinking.

You probably want to answer a list of personal questions about who you are, what your motivations are, what kind of student you are, etc. to your guidance counselor to give them a good idea of who you are. (these are just examples, provide a list of answers to whatever you think they'll need to write an accurate, meaningful recommendation for you).

The early decision deadline is 11/1/12, its only the end of September. So you have a few weeks to get acquainted with your GC. No need to panic.

I don't know about you, but if you're so ambitious about applying to a school like UChicago, why haven't you scheduled a few meetings with your counselor in past years (9 - 11)?

It would seem like a logical thing to do seeing as your GC probably manages hundreds of students.

I did that throughout about 10th and 11th grade year and now my counselor has a general idea of who I am.

What do you think you should do?

I think you should go to your counselor with a few questions you may already have the answer to just so they get to know you a little. Then, i'd bring up that they need to do a letter and they can ask you questions if they are confused. Overall, if you have a good record they will probably just write a positive letter anyways

A resume is necessary. Schedule a meeting with your counselor and talk. Chill out.