[TowerTalk] AO - No Plot Display

[kk9a at arrl.net]

I just bought a new Toshiba notebook computer and I loaded Brian Beezley's
YO and AO antenna modeling programs into it.  I have used these programs on
a number of computers with excellent results, until now.  On my new computer
YO works fine however on AO when I switch to plot to see the radiation
pattern  the display goes black.  I know these programs were written in DOS
and not for Windows XP Professional, but on three Dell desktop XP Pro
computers it works fine.  To start the program I switched to the Command
Prompt and made it full screen.   I have tried various color control
settings and computer resolutions without success.  I'm not sure if Brian
still sells or supports this product, if so it's not well publicized.  Any
suggestions?

John KK9A