The following hardware and software is needed to view the panoramas: Macintosh Power Macintosh running System 7.5.1 or higher 14MB RAM allocated to the Web browser Netscape Navigator 3.0 or higher or Netscape Communicator 4.01 or higher Windows Pentium computer running Windows 95, or Pentium 166 computer running Windows NT 16MB RAM for Windows 95, 32 MB RAM for Windows NT Netscape Navigator 3.0 or higher, Netscape Communicator 4.01 or higher, or Internet Explorer 3.0 or higher   To use the viewer, do one of the following to navigate within the image: Press A to zoom in; press Z to zoom out. You can try using Shift and Ctrl (similar to QuickTime VR) to zoom in and out, but depending on your system (or your user's system), Java may not reliably let you use these keys for zooming. If you find you can't use Shift or Ctrl, be sure to use A or Z to zoom in or out instead. To pan across the image, drag the pointer in the direction you want. If you're using a Macintosh, you must drag within the applet window to pan across the image. In Windows, you can drag across the screen, crossing the applet boundaries, to pan the image. You can also use the arrow keys to pan the image. Press the space bar or H to view hot spots in the panorama. Hot spots appear with a red target icon in the image. Click the hot spot to cause an action, such as jumping to another panorama.