The idea of a print preview in Flash is sort of redundant
because what you see is exactly what you get.
If you want to make a print preview, you need to design it
inside of flex and basically rearrange the display to show what you
want to print. There is no magic option for "print preview" if that
is what you are looking for.
I have a mac pro and the pdf opens differently then on my husbands macbook air , and the mac pro allows me to click on properties to i can see the details of the pdf. I did not create the pdf, it was emailed to me