Website help needed please

[ScoobyDan]

As some of you will know , I have a basic website up and running, its not great but it gives us a little online presence until the business makes enough money to pay for a pro designed website.
www.elegantreflections.co.uk

The site was built using a cpanel site builder included with the hosting package but as I am barely computer literate it didn't make much sense to me

We have recently added a Gallery section. http://www.elegantreflections.co.uk/Gallery.php

What I would love to be able to do is make the small pictures 'clickable' so that when you click on them or hold the mouse pointer on them they go bigger.
Can anybody help me do this ?

Thanks
Dan

[Megaman]

Well i know the basics if you need some help...

[ScoobyDan]

Well i know the basics if you need some help...

I need all the help I can get mate.