Hi, I want to authenticate user by checking with our LDAP their login and password. For that, i need before to : 1- download LDAP client librairies OpenLDAP or Bind9 2- compile those librairies 3- Compile PHP with option ==> --with-ldap 4- Setup php.ini by removing semi-colon in front of ==> extension=php_ldap.dll 5- copy libeay32.dll and ssleay32.dll to my SYSTEM folder C:\windows\system32 Did i miss something ? Moreover, an regarding point 2 : which librairies concretly should i compile ? Because OpenLDAP tar has several folders and files. thanks a lot, Alain