Facebook Like Box Problem

Forgive me if this is the wrong place, but I’ve been following a number tutorials on adding a Facebook Like Box to a WordPress website and they all point me towards ‘Social Plugins’ at http://developers.facebook.com. On the Like Box page (all the tutorials show) to the right of the column where you enter your settings, a preview box that shows you what your Like Box will look like. But I cannot see this preview at all. It just doesn’t show up. I have carried on regardless but, even when I click the ‘Get Code’ button, I cannot select any of the other 3 buttons, particularly the IFRAME one which is mentioned in one of the tutorials. Here’s a link to two images to show you what I mean. Not sure if this is more a browser issue or not. I’m using the latest Firefox and I’ve tried it in IE 7.

Any help would be greatly appreciated.

Many thanks,

Jim