Hi
I have PHP4 working fine with Xitami on my Win98 machine. I use this to test that php scripts are working before uploading to my ISP. But I certainly did have problems trying to use Xitami aliases, which is what David is referring to.
Solution 1 is to change the main HTML directory in the setup configuration dialog, and keep your pages/scripts in that folder structure. This does cause some of Xitami's own help pages to fail, but I'm not too bothered about that.
Solution 2 (better in my case) was to move my webpages and scripts into folders in the Xitami "webpages" directory, which is the installed default. The main HTML directory in the config dialog is then just the original value of "./webpages".
I've only ever used php4, so I just have the one filter (.php=d:/php/php.exe).
I was actually very surprised at how easy xitami and php4 were to get going together.
Hope this helps, although I realise that everyone has slightly different requirements.