If you haven't done this yet, go to

http://nanowrimo.org/participants/YOUR_NANO_ID/novels

and give at least a working title. You can always edit this later.

Oh, and if you want, you can spend time now (not in November) coming up with a cover for your novel, and writing the synopsis. Unless, of course, you're busy working on your outline or other planning stuff for your novel. Still, it can be fun to create a quick cover.

Here's my cover.

http://nanowrimo.org/participants/katherinewriting/novels/yes-if