Dash hidden lines in 3D view (AC2008)

I just can't find it in AC2008 - how do I make the lines hidden from the
current perspective to appear dashed (or other color or whatever)?

I tried tinkering with HLSETTINGS and OBSCUREDCOLOR but nothing happens
in both 3D wireframe and 3D hidden modes.

 

It's tricky. 2008 may have an improved interface for doing this, but
I'm not aware of it. Traditionally, judicious use of the SOLVIEW and
SOLDRAW commands can produce the desired result - but it can be
extremely fiddly.

I can't remember off the top of my head whether or not you can assign
dashed linetypes to 3d objects. If you can, you might find it easier
just to plot a paperspace view to pdf twice - once with HIDEPLOT set
to ON, using a continuous linetype, and once with with HIDEPLOT set to
OFF, using a dashed linetype. Once plotted, it would be fairly easy to
combine the two views in your favorite graphics package. That's
actually how I do it - but I don't use dashed lines. I just make the
'hidden' lines fainter in photoshop by adjusting the transparency of
that (photoshop) layer.

Good luck.