Theoretically, Java will be incorporated before long into your operating system, your browser, maybe even your toaster oven. In the meantime, you'll need one of the following browsers, a good fast Net connection and a fast hand with the "ctrl-alt-delete" or "ctrl-apple-reset" keys: Netscape Navigator 2.0 or newer (for Windows) or Netscape's beta version of Netscape Atlas Navigator 3.0 (for Macintosh). Sun's HotJava browser for SPARC/Solaris 2.4 or 2.5 or Microsoft Windows NT/95 (a Macintosh and Solaris x86 version is promised).