The following article may help you:

http://www.west-wind.com/presentations/pdfwriter/pdfwriter.htm

>Currently, my user need the output to send\save as .pdf format!
>
>This can be done by installing the "Acrobat pdfWriter" as default printer,
>and write the following command :
>
>repo form user_file TO PRINT NOCONSOLE
>
>But, above method need us manually to key in the file name.
>
>My question is what should i do if i dun wanna user to key in manually the file name for the pdf?? What command i should use to auto generate the pdf file??
>Pls advice!!