Usually, what you're asking for is pretty easy with some CSS. I just tried to authenticate on your site to figure out the CSS that would work on your site, but ran into the following error during registration:
Unknown column 'MSN' in 'field list' SQL=UPDATE #__kunena_users SET `MSN` = '' WHERE userid=622
JFBConnect does try to set the 'MSN' field into Kunena, and I'm assuming that's causing some problems. Can you tell me what version of Kunena you're using? It's very possible they removed that field altogether which is causing the problem.
If you want to try a quick change to fix things, please edit the /plugins/socialprofiles/kunena/kunena.php file. At the end around line 144, you'll see:
$kunenaFields[] = (object)array('id' => "MSN", "name" => "MSN");
Put two forward slashes in front of that line, like //
Then, go into the JFBConnect Admin -> Profiles area and hit 'Save'. That should hopefully remove that field from tying to be saved and.. my guess.. is that you don't care about the user's MSN field anyways
Once we help get you past that hurdle, we can help you with Logout area.
Thanks,
Alex