What is the easiest way to put a photo gallery into an existing website?

I am ready to give up.  This really can't be this difficult. 

Either that or I am the dumbest person in the world.  Up until now, I didn't know that I was. 

I just want something easy.

I am designing a website using Dreamweaver Cs5.5.  I am on a PC with Windows Vista Operating System.

I have an existing website www.metzartonline.com. 

On the Gallery page, I want to include a simple photo gallery where I can showcase paintings.  I would like a simple (theres that word again) grid that shows the photos as thumbnails.  When you click on the thumbnail, it shows the image in a larger size with a small caption.

I've tried using Bridge which was very easy to set up but I'm at a loss on how to integrate that into the webpage.  After lots of research, I've come to the conclusion that integrating that into an existing website just insn't that easy to do.

I purchased the Classic Photo Gallery from Flash Development 24 because it was described as "easy to use."

It is not easy to use.

The steb by step guide for one, isn't even written in proper English.  I've tried to work with it an I've emailed support several times.

I'm ready to give that up.

I just want to make a simple gallery that I can integrate into an existing website.

Can anyone suggest the easiest program to use?

Please?