I am trying to make an <object> that will show the object in the browser window, but if they don't have the plugin it will automatically download it (or ask them if they want to download it). I have voloview2 express (which is a cad viewer made by autodesk) as the plugin. The drawing can be viewed fine when it is installed, but I have to manually install it. Does anybody know how I can make it download and install automatically. Thank you for your help, you guys here have helped me build my scripts and learn php. If it wasn't for stuff like this PHP would die, at least in my mind.