is it possible for us to add customised HTML and CSS to the quiz, so that we can make the quiz more interactive ?? and how can we add images and videos to the quiz? what are the external modules available to make a quiz more interactive? I don't wan't to use flash at all. ! Someone help !
Are you looking for help with the Quiz module? If so ask again on the Quiz Module forum.
If it's with the Hot Potatoes module, can you give us some more information? Are you on Moodle 1.9 or Moodle 2? What sort of interactivity do you want to add? Have you done the Hot Potatoes Tutorial? It's very easy to add images and videos.