I'm very greatful to you all - excellent advice.

The Nivo Slider is close to the answer - thanks Drwyd. The only problem is I can't get rid of the radio buttons beneath it. Tried covering them up with a box but that didn't work, unless I group the slider with the box - but then the slider didn't work.

Maybe I need both the Nevo Slider and JS editing but I'm afraid I know nothing about JS.