sleep' is not recognized as an internal or external command operable program or batch file.

Here are some options...
http://www.robvanderwoude.com/wait.php

Put sleep(60); as the last line in acme.php and remove that line from your batch file.

sleep(60);
and
sleep(60)

still generate same error in windows server 2008

in place of sleep(60) in your batch file try ping 127.0.0.1 -n 61 >NUL

This should have the effect of pausing the script for 60 seconds.

I don't think you're putting it INSIDE acme.php.

If it's in the batch file, then Windows will try to look for a Windows program called "sleep", which is not there by default. But sleep(60) is a valid PHP command and will work if it is inside the acme.php flie.

Your batch file should just look like:

@echo off
:loop
"C:\php\php.exe" "D:\Data\acme.php"
goto loop

And acme.php should look like:
<?php
// all of the normal acme.php code here

sleep(60);
?>

with
sleep(60) in acme.php


would acme.php run 200 times in one minute

It should not. The batch file will wait until php.exe finishes running acme.php before running it again. So if acme.php is sleeping for 60 seconds, then acme.php will run once, sleep for 60 seconds, and then exit, and the batch file should THEN restart the loop and run acme.php again. So it should only run once per minute.

Also, it takes a second or two for php.exe to start and end, so each full loop might actually take something like 65 seconds (or more, if acme.php normally takes a while to run)

sleep command is in Windows Server 2008 Resource Kit, also you can copy sleep.exe from you windows 2003 to your windows 2008.

downloaded
http://www.computerhope.com/download/utility/sleep.exe

but where do i place this file

in windows web server 2008

sleep.exe makes sleep work when put in c:\windows\