we all have a gallery that sets up automatically for us -- so it's already created and blank, waiting to be filled. If you have a "control panel" button at the top nav of this page, you can get there through that. you can also go to the photos page, find yours and click on it -- i believe that as long as you are logged in, you can post to it.
but, it's also midnight and i've been flying all day, so what do i know?
let me know if that doesn't work and i'll post more complete instructions -- i'm just completely wiped right now.
-m