A plug-in available for browsers so that they will support Macromedia objects such as Flash. To install a shockwave plug-in you can either download it straight from the Macromedia web site or when you load up a web site that contains shockwave data it will usually offer you the opportunity to download the Shockwave plug-in. Shockwave objects are now becoming a very popular feature in many web site who want to offer a interactive graphical feel to their site.