Photo Grid as shown in demo

Urgs!
Taking a look into this so called ‘Support’-Forum makes me think selling is more important to Kairaweb than supporting. ?? Kinda sad, because I was about to purchase one of their themes, but will have to think about dropping this idea due to development reasons.
Maybe you can proove me wrong and guide me on how to create a photo grid as shown in the Nikkon demo?

The page I need help with: [log in to see the link]