Just to add my bit; I am using php as a CGI and I still get very high processor usage about 50%. My system is a little faster so the performance of ISAPI to CGI seems about the same. Arthur 'a star solutions' disclaimer The information transmitted is intended only for the person or entity to which it is addressed and may contain confidential and/or privileged material. If you are not the intended recipient of this message you are hereby notified that any use, review, retransmission, dissemination, distribution, reproduction or any action taken in reliance upon this message is prohibited. If you received this in error, please contact the sender and delete the material from any computer. Any views expressed in this message are those of the individual sender and may not necessarily reflect the views of the company. We believe that this communication is free from viruses and other potentially dangerous programmes, but the recipient opens this communication at their own risk. We assume no responsibility for any loss or damage arising from the receipt or use of this communication