Hi, Okay I have several questions... I am currently running a NT4 IIS4 box running three PHP websites with MySql and two ASP websites using DB back ends as well. The three PHP websites all use API's toolkits built on top of PHPLib including templating and automatic forms generation.. The server is currently processing 40 simultaneous hits and is struggling so I am looking for a reduction in memory usage and maybe a speed up with PHP processes.... So my questions are: 1. It is worth while upgrading to PHP4 will I get noticeable speed increases ? 2. It is difficult to migrate from PHP3 to PHP4 ? (I have done this on Linux and had very few problems is Widows the same ?) 3. Is anyone out their running PHP4 ISAPI on a production server and getting reliability out of it ? (This was my part of my solution until I read the docs about it not being stable ) 4. Does PHP4 still work with PHPLib reliably? I would appreciate any responses.... -- Fabian Lane Cybersource Pty Ltd Phone: +61 3 9642 5997 Mobile: 0402 2323 38 E-mail: [EMAIL PROTECTED] Website: http://www.cyber.com.au -- PHP Windows Mailing List (http://www.php.net/) To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED]