What I am planning is some articles that are heavy on images and for those images to have descriptive captions below them. I'd also like the ability for each image to be a button, which when clicked by the reader, would open a larger version of the image in a new window.

Is this something I would be able to do with an iJoomla installation on my site?

Thanks Ricardo,

It's something I really want to be able to do - like they do on this site:

bike radar

It really adds to the professional layout the site has.

I'll put it on my wishlist!