printing iso-8859-1 problems

[jarausch@igpm.rwth-aachen.de]

Hi,
I have a problem with TkRat's postscript (pretty)
printing. 
TkRat does show the German umlaut correctly
(the message has Content-Type: TEXT/PLAIN; CHARSET=iso-8859-1)
but when printing the message most umlauts get lost.
Curiously 2 of them (o-umlaut and u-umlaut) are printed.
(Printing the original file that has been mailed by a2ps
 on the same printer works just fine)

How can I change this?

Many thanks for a hint,

Helmut Jarausch

Lehrstuhl fuer Numerische Mathematik
RWTH - Aachen University
D 52056 Aachen, Germany