How can i divide product info in tabs?

I have spent all afternoon trying out everything from DOMtabs to Post UI Tabs Plugin and others. I have had no success in dividing product information into tabs.
The look I'm after on a product page is as follows :

Feature photo+thumbnails+description
TAB 1 - product variables
TAB 2 - shipping details from seller
TAB 3 - Comments box

Of course this is easy enough to do in the Editor, but i want to simplify things for my sellers. So they fill in all the product details in the product editor page, and then the product page should be divided up into tabs as per above. Here's an example :

Can someone guide me in the right direction?
Thanks in advance.