I downloaded the ZIP files.  After un-zipping, I have the following files:
        back                             GIF Image
        index                     Chrome HTML Document
knob.class                     CLASS File
oscilloscope.class             CLASS File
oscilloscope Chrome          HTML Document
oscilloscope_kr             Chrome HTML Document
oscilloscope_s             Chrome HTML Document
sample                     GIF Image
scope                             GIF Image
My problem is that I don't know what to do next.  Also, what version of JAVA do I need?
Any help?
Ken Winter