Florian,
Depending on what you're looking for, there's a few options. Unfortunately, our JFBCLogin module doesn't have a 'horizontal' switch, but hopefully one of the below will work for you:
1) Add a "Custom HTML" module to where those flags are. In that module, simply type {JFBCLogin}, and on the page, the Login With Facebook button will show. This won't have the 'normal' Joomla login form or register/forgot links.
2) Create a template override for the JFBCLogin module and change it to be more horizontal. The JFBCLogin template file isn't pretty right now.. it's due for an overhaul, so this may not be super simple, but it gives a lot of flexibility. To create (or understand why to create) a template override, see:
www.sourcecoast.com/extensions/troublesh...s#template-overrides
There are a few other options depending on what you're willing to do or specifically looking for, but hopefully the above gets you started. If not, let us know some more specifics of all you want shown, and we can come up with some ideas for you.
Thanks,
Alex