Hi, Sorry for answering so late... One major reason in choosing RHDS was the RFC compliance and interoperability. There are two features wich should be very interesting * AD/RHDS map attribute configuration (even simple) * multiple script programming (API for PHP, Java, Perl) for plug in developpement Hoping it's not ridiculous... BR, -- ========================================== Emmanuel BILLOT IRD - Orl?ans D?l?gation aux Syst?mes d'Information (DSI) t?l : 02 38 49 95 88 ==========================================