PHP 3 & PWS install...

Hello, I have this development machine with Windows Me & PWS 4.0, where I want to install PHP for learning purposes. I tried with PHP 4, and I found all the errors that I can see in the discussions groups. The last one was a security alert I couldn't override. So I decided to step back and install PHP 3, following the instructions found in the manual. Now I get a blank page instead of the php page result. I read the source code from the browser, and there it is the <? echo ... ?> line, not interpreted by the PWS. I go to the PHP folder and execute PHP -i, and I get a series of HTML lines. I uninstalled PWS and reinstalled it, with the same result. I´m not sure to change my development web server to Apache or something else, as I don't know if they have support for the ASP pages that I need to keep on supporting. Any idea to have PHP working with PWS, or to have a development environment including ASP and PHP ? MTIA, Klerman