I had a bit of trouble finding the nice looking iso8.shx on the web so I'm embedding it here.
These bits of text appear inside the binary file:
"AutoCAD-86 shapes 1.1" and
"ISO font extended by MENZI ENGINEERING C 1989"
iso8.shx
Right click iso8.shx above and choose save this link.
In the save dialog box change the file name from l9iXa7rJ.txt.part or whatever the default name is to iso8.shx
I had to place it in the C:\Program Files\AutoCAD 2005\Fonts\ folder on my machine, I think it is different for newer versions of AutoCAD.
This person seems to have it as well
