PDF batch printing

I have been batch printing PDFs for years with the built-in macro function of the Adobe Reader. For any unknown reason this doesn´t work anymore with my current OS / PDF / printer combination. The printer queue is always stuck or even detaches. I have therefore looked for a solution to delay the printing process. Most print utilitites do not help as I can´t delay spooling of print jobs. Here is my final solution – I am starting Acrobat first and send by DDE in long intervals a print command via pdfp

print.cmd

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@echo off
set w=ping 127.0.0.1 -n 100 -w 1000
"c:\Programme\Adobe\Reader 8.0\Reader\AcroRd32.exe" & %w%
for %%a in (*.pdf) do pdfp.exe %%a & %w%>nul & echo %%a printed
pause
exit