Theme (Hatch)

I am using the Hatch theme for my site. Is there anyway without knowing how to code or paying extra for upgrades etc, to add a Flash widget/player/viewer/slider to my site- and if I can, also add captions to the photos?
I have tried downloading various image viewers and they come as a zip file. After that I am not sure how to transfer that into a working image viewer- what would I need to do?

Thanks