How can I print using custom settings of page?

Hi,

I'm using DS from few days but I have encountered a problem printing with PDF Creator; in particular I have some problems using personalized  settings of page.

The problem is printing formats differents from standard type like A0, A1, A2 ...

When I need to print a page with custom settings the DS reduces my sheet in a standard type A4.

The same happens using Postcript in PDFCreator.

I've tried with all available settings but the results remain the same.

My OS is W7 32bit.

Thanks in advance,

Zeno.