semigraphic characters: how to display?

Hi,
I've already posted few messages about my problem, but I've not found yet the 
solution, so I do it again. I've got a problem with semigraphics chars on 
emacs. I want to use the chars of the chars set mule-unicode-2500-33ff, so
I've rewrited my .emacs file to rebind some chars with the special keys 
f1-f12. When I edit a new file, using those characters, all is displaied 
right. When I save the file emacs asks me the coding system, I use utf-8 and 
all is ok (i.e. when I reopen the file all the chars are displaied rightly).
Instead if I try to open a file, with semigraphics chars, edited with 'dwp' 
(an editor wordstar compatible) I can't display rightly the semigraphics 
chars. I've tried some coding system, but I can't never display rightly the 
characters. Here there's a partial hexdump of the file that I want to open 
and display:

0000000   /   M   A   S   C   H   E   R   A  \r  \n  \r  \n   ±   ±   ±
0000000  046457  051501  044103  051105  006501  006412  130412  130661
0000010   ±   ±   ±   ±   ±   ±   ±   ±   ±   ±   ±   ±   ±   ±   ±   ±
0000010  130661  130661  130661  130661  130661  130661  130661  130661
*
0000050   ±   ±   ±   ±   ±   ±   ±   ±   ±   ±   ±   ±   ±  \r  \n   ±
0000050  130661  130661  130661  130661  130661  130661  006661  130412
0000060   Ú   Ä   Ä   Ä   Ä   Ä   Ä   Ä   Ä   Ä   Ä   Ä   Ä   Ä   Ä   Ä
0000060  142332  142304  142304  142304  142304  142304  142304  142304

The files are reletad to dataflex database. Any idea?
Thanks.


-- 
Luca Ferrari,
fluca1978@xxxxxxxxx