INTERNET BROWSER   For all users: To visit a trade-fair, you need Microsoft Internet Explorer (Version 4.0 or later) or you need the Netscape Navigator/Communicator (Version 4.0 or later). Earlier Versions cannot display the trade-fairs and cause error messages. If you use the right browser and error messages occur: Please make sure that you have enabled Java and Javascript in your browser. We recommend a resolution of 800x600 pixels and more than 256 colours.   For AOL users: You need an AOL software which includes Internet Explorer 4.0 or later. Wir recommend the latest AOL version. In any case, you should deactivate web image compressing, otherwise images will be shown blurred. To do so, choose "My AOL", then "Preferences", after that choose "www" and select "web images": make sure that the small checkbox named "Compress images" is off.