win xp, apache 2.40, and php4.2.2

I am trying to upgrade to apache 2.40 from 2.30 and from php 4.1.0oc4 to 4.2.2. The apache install went just fine and I can navigate to localhost. When I add the line to loud php to the http.conf I get an operation failed. I'm lauding php4apache2.dll as the experimental directory and apache2filter.dll seems to be removed from this version. when starting from the command prompt I get can not load C:/www/php4/sapi/php4apache2.dll into server: the specified procedure could not be found. What file should I load? Any Help getting this setup to work? My next step is going to be rollback to old copy of php and see if it works on apache 2.40