xfig figure with formula

[Torsten Mueller]

Hallo,

until now I have included my figures from xfig with eps which works
fine.
Now I need a formula inside the figure. The manual says, that I should
save the figure in xfig as ps_tex and ps_tex_t.
However, when I load ps_tex_t, I get an error message, that there is no
bounding box.
When I try it with include file, then I cannot see the figure (not on the
screen and not with xdvi).
I work with Lyx 1.0.3 and Solaris 2.7.

How do I have to do it right?

Thanks,
Torsten