At first, by using the normal command i can send the print job to "Acrobat PDFWriter" (My PDFWriter is a sharing devices from my print server), and "save as" windows pop out for me to rename the "Remote Downlevel Document".
After i name the file and the outcome when i open the PDF file is :

"There was an error opening this document.This file does not exist.


After that, i tried to use the below command to send my print job(LPT1 is my PDFWriter):

SET PRINTER TO "LPT1"
REPO FORM testing TO FILE "C:\tmp\testing." NOCONSOLE

There is a nonempty file by the name of testing. , there are no actual output file. And when i try to rename the file to .pdf , the following error message appeared :

"Acrobat could not open "testing.pdf" because it is either not a supported file type or because the file has been corrupted(For example, it was sent as an email attachment and wasn't correctly decoded)

Anyone know this?? Pls advice!
Thanx a lot!