(mgp-users 00098) the hard way from .mgp to .pdf

[Stephane Lentz <Stephane.Lentz@ansf.alcatel.fr>]

I would like to turn some mgp slides into PDF.
I therefore use ps2pdf from ghostscript (ghostscript-4.03).
The problem I face is although the postscript document is a
landscape one I always get a portrait-layout PDF document :
I have to ask people to rotate their screen to see it right :-)
Soemeone knows how can I generate a pdf document in landscape ? 
Shall I consider pstill or Alladin-ghostscript instead of the 
standard GNU ghostscript ? 

Any advice ? 

Thanks, 

Stephane.