Enscript text 2 postscript converter

I am trying to create a pdf file starting with a .eps file for the letterhead, and a text file to print on it.
According to the man page the following should work.

^@epsf /home/aoti/coll07.eps
                             ****** INVOICE ******                   PAGE:  1



where ^@ is a single octal zero character.
Any advise or links to a decent tutorial would be appreciated.