BadBlue’s new Personal Edition has been tuned for XP Home. XP Home, of course, doesn’t include any sort of web server. BadBlue is a freely downloadable web server that is a tiny download (just a little over 500K).
There is a wizard and illustrated tutorial for setting up PHP.
Free download of server –
Installing PHP and a server on your Windows PC – http://www.badblue.com/tuphp.htm
Writing your first PHP script – http://www.badblue.com/tuphp1.htm
Very easy to setup and it’s so small you can carry it around on a floppy.