First Hi :^)

Well, I have an apache 1.3.6 server running with mod_ssl loaded dinamically. 

I tried to add mod_php3 following the procedure described in INSTALL.DSO
and it completed successfully but the php3 files could not be processed. 

It only began to work when I included the same kind of lines that mod_ssl included on httpd.conf when it was installed. Look at theses lines of httpd.conf

AddModule mod_ssl.c
AddModule mod_php3.c

LoadModule ssl_module         libexec/libssl.so
LoadModule php3_module         libexec/libphp3.so

AddType application/x-httpd-php3 .php3

And now runs nice, and look on the output of the http -l command :

Compiled-in modules:
  http_core.c
  mod_env.c
  mod_log_config.c
  mod_mime.c
  mod_negotiation.c
  mod_status.c
  mod_include.c
  mod_autoindex.c
  mod_dir.c
  mod_cgi.c
  mod_asis.c
  mod_imap.c
  mod_actions.c
  mod_userdir.c
  mod_alias.c
  mod_access.c
  mod_auth.c
  mod_so.c
  mod_setenvif.c

There is nothing about mod_php3.c and mod_ssl.c because they are dynamically loaded.

I think that you should modify the documentation, to tell about including these lines manually on httpd.conf

Bye and regards