Postscript: Custom page Size in Visio 2003

Hello,

I want to print drawings in Visio 2003 to pdf.For this I use
a Postcript Printer Driver.Printing to the pre-defined paper sizes
works fine.But if I select postcript custom page size and type in
a custom size e.g. witdh 2000mm and height 841mm,Visio doesn´t take
this settings! As page size Visio always shows a A4 Format in the
print
setup. How is it possible to define a custom page size? Has anybody
the same
problem? It seems that Microstation changed something for printing in
Visio 2003! In Visio 2002 I had no problems like this.
I use Windows 2000, Office XP, Visio 2003 SP1.

Thanks for any Help!

Best regards

Tobias