Be sure that the followings are installed in your computer:
Adobe Acrobat
Adobe Distiller
If you chose "Easy Install" option when you installed Adobe PageMaker, then they are present.
If you use more than one systems by swiching among them, then you must install PageMaker with "Easy Install" on each system.
Open a PageMaker file from which you want to export a pdf file.
From the bar menu of the PageMaker, select the following item :
Then the following dialogue window appears. Click "Export" :
If, as above, "View PDF using" is checked, the PDF file generated is automatically opened by the PDF Viewer.
Check the content of PDF document if it is same as the original PageMaker document.