I need to create my own website with a special page where the customer can choose the building materials for a house, everything has to be visual, so the customer can select the type or color of the material of the roof, walls and windows. each selection has a specific png picture (with alpha) that will be displayed to make the final image. after everything is ready the customer can press a button that will send me an email containing the choices. is there any free plugin? if not then were should I start? please keep in mind that I'm really a beginner.
thank you and excuse my English.