I am using Internet Explorer 6.
That is probably the key. I will give it try on my Linux machine.
I will look into another for windows as well.

Hi John,

I unzipped all the contents into a dedicated folder.

I double-clicked the file SChart.html located inside the dedicated
folder. Works fine for Firefox.

Same here. Maybe he's using a non-standard browser like IE [g].

Another option: http://www.qsl.net/ac6la/xlzizl.html
John Ferrell W8CCW