Help with Featureed Image & Gallery

Hello

I’m trying to get my images smaller and have the options imposed on the bottom with thumbnail images as yours are such as here…(when you click on the image)

http://hb-themes.com/themes/highend_wp/shop/jacket/bolivian-jacket/#prettyPhoto
(when you click on the image)
yours also has the option in the top right to make larger if need be.

Mine are by default large and don’t have the option in the top corner to make smaller or larger such as here after you click on the image…

http://cloud.brilliantgems.co.uk/?product=4759#prettyPhoto

It also doesn’t show the icon image choices either.

Please advise where this setting is as I’ve looked and looked and cant find it…

Best wishes

Bhu