[Groff] How to fit a picture in groff

[GregExp]

Hi groffies, 

I try to fit a .png picture into a groff text.
I found out I have first to convert it in a .eps picture. 
It worked. 

Now I have my .eps picture for example 207.eps. 
I wrote in the text file (foo):

.(z
/home/gibux/207.eps
.)z

I wanted to output this text with the command: 

groff -me foo > foo.ps
or
groff -me -p foo > foo.ps

With both commands I get in the output-file:

/home/gibux/207.eps

but I don't see the picture. 

Maybe I did'nt understand something? Wrong option?
Thank you for helping me.

gregoire babey