execute file on server exec()

[lioslios]

guys i wand to execute a program on my seerver, i use the

 

 

$_SESSION['tmp'] = exec("print.exe", $results);

 

and works but when i change the directory

 

$_SESSION['tmp'] = exec("d:\\print\\user1\\print.exe", $results);

 

dont work,

 

works only in root directory, is any way to set the execution to other directorys??

 

thanks