install differences pws php3 => php4

Not meaning to sound dense but the direction in the README file for php4, do they replace the older instruction about modifying the registry or add to it? And with PWS I don't see anything about ISAPI Filters. Thanks in advance. David Perry Installation Notes for IIS 4.0 ------------------------------ - Install the php.ini file and the DLLs as mentioned above. - Start the Microsoft Management Console (may appear as 'Internet Service Manager'). - Under 'ISAPI Filters', add a new ISAPI filter. Use 'PHP' as the filter name, and supply a path to the php4isapi.dll that is included in the distribution. - Under 'Home Directory', click on the 'Configuration' button. Add a new entry to the Application Mappings; Use the path the php4isapi.dll as the Executable, supply .php as the extension, leave 'Method exclusions', blank, and check the Script engine checkbox. - Stop IIS completely (you would have to stop the IIS Administration service for that - stopping it through the Management Console isn't good enough; You can do it by typing 'net stop iisadmin' on a command prompt). - Start IIS again (you can do it by typing 'net start w3svc' on a command prompt). - Put a .php file under your Web server's document root and check if it works!