That's what I'm guessing. I tried to use the Static FBML app, but apparently Facebook is not supporting that anymore as they want you to move to iframes.
With that said, I have read that now there's a Wordpress Plugin called Tab Manager and it does exactly what I need. What I will do is create a graphic and post it in the wordpress content creation window, add image maps using the wysiwyg editor and viola! done.
Or, so they say...we'll find out:)