Starting dos application from php

Hi, I'm Adrian and I have the following problem: I have to encrypt a text file. For that I use a PGP DOS version (PGP 2.6 ui - Unofficial International, because I'm outside of the US). I installed the PGP and it is working fine when starting it from a Dos command line: c:\PGP> -e test_1.txt adrian //The result of this command is that it creates the encrypted file (textfile.pgp) using my pubkey. Then I created a batch file (called cript.bat) like this: @echo off SET PGPPASS=xxxxxyyyyy //This is my cipherphrase cd pgp //This change the directory pgp -e test_1.txt adrian >log.txt //This is the command that encripts the file with my pubkey and redirects the pgp messages to a log.txt I started like this: c:\>c:\pgp\cript.bat and everything was OK. Then I tried to start all this from a php script: $path = "c:/pgp/cript.bat"; exec($path,$return,$exit_code); echo"$return<br>$exit_code"; It does'n work. The script returns $return = Array and $exit_code = 0, but it never creates the pgp encrypted file. I forgot to mention that my PHP is running on Win'98 toghether wirh the Apache. Can anyone help me ? Thanks Adrian