Reddle Theme – Change Image Gallery

Hi, I hope someone can help me please.

My blog is http://www.veronicacolvin.com

I would like to change the existing image gallery (see Portfolio tab on the main menu) to a hover type gallery i.e. where an image is featured, and the rest are below, you can zoom into the image for more detail etc.

At the moment, the image gallery I have does not allow you to zoom into the image. Can anyone please recommend a solution/fix and an image gallery to use?

I have tried installing a plugin but could not get the image gallery to work.

Cheers
vc