We don't provide on-site configuration services. If there's something you're looking to do, we'll gladly try to describe the process though. Unfortunately, ever site and template is different, so there's not a one-shot solution to most questions.
As for our Login / Register button in the top, we're using the SCLogin module that comes with JFBConnect. We've set the login to be a modal and set the links to be Text fields instead of buttons. Then, we just placed the SCLogin into a corner module position in our template.
I hope that helps give you some ideas.
Thanks,
Alex