Thanks. I have been very impressed by the quality of help on this forum.
I actually did get it to work! No thanks to the PHP4 installation directions or to The PHP4 Bible (p 43 - 45) which seemed to think we should not try and discussed only the isapi approach.
However, the book PHP fast & easy web development (p 33 - 35 presented the information that even I could get to work). I think it is the absence of the information in the installation directions that is causing the confusion.
Here is way I did and it works for me:
Added these lines in the apache httpd.conf file
ScriptAlias /cgi-bin/ "H:/Apache Group/Apache/cgi-bin/"
ScriptAlias /php4/ "H:/php4/"
AddType application/x-httpd-php .php
AddType application/x-httpd-php-source .phps (I have no idea why this is here)
Action application/x-httpd-php /php4/php.exe
I also:
Extracted the php-4.0.2-Win32.zip file to H:\php4
Copied and renamed php.ini-dist to php.ini and placed in the c:\windows directory
Copied php4ts.dll to c:\windows\system ( msvcrt.dll was already there )
Thanks for you offer to help - it encouraged me to try again. Looks pretty nifty.