Cann't exec() or system() with safe_mode=1

Hello, I have a problem with safe_mode. I want to execute some program while in safe_mode=1 but I cann't. To make it as simple as possible I'm now using myprogram.exe that is the typical "hello world" program. It only works with safe_mode=0 and with safe_mode=1 nothing happens and it returns nothing: no echo, no error message, althoug error_reporting=E_ALL. I try it with exec() and system() and it is the same (both execute it or both don't). After having read some blogs and newsgroups I have set all these things: -myprogram.exe is placed in C:\wwwroot\tests\bin. IUSR_SERV, IWAM_SERV and ALL can read and execute it. -a copy of CMD.exe is placed in C:\wwwroot\tests\bin. IUSR_SERV, IWAM_SERV and ALL can read and execute it. -C:\wwwroot\tests\bin is in the PATH -safe_mode_exec_dir = "c:\wwwroot\tests\bin" -with IIS manager I have set both "Anonymous"_and_"Windows integrated" authentication and only "Windows integrated" authentication in C:\wwwroot\tests. ¿Have you any idea? This is my php ########################################################## <?php $retstr = exec('C:\wwwroot\tests\bin\myprogram.exe 2>&1',$retval); echo "<p>retstr: ".$retstr; echo "<p>retval: "; if ((bool)$retval!=False){

    foreach ($retval as $nombre => $valor){
        echo $valor."<br>";
    }

} else {

    echo "False<br>";

} echo "<hr>"; $retstr = system('C:\wwwroot\tests\bin\myprogram.exe 2>&1',$retval); echo "<p>retstr: ".$retstr; echo "<p>retval: "; if ((bool)$retval!=False){

    echo "True<br>";

} else {

    echo "False<br>";

} ?> ########################################################## And this my server: Windows 2000 IIS 5 PHP 4.4.3, ISAPI I have tried it in a W2003, IIS6, PHP 4.4.2 with the sema result :( Thanks for your help.