I posted a new tutorial that I threw together today about a simple way to parse XML with PHP. It's by no means a highly detailed tutorial, nor does it get into some of the more advanced features behind XML parsing (like XPath and things of that sort). It's just a nice intro to making an associative array out of a given XML stream.
I have had a few people ask me for something like this via email, so I finally decided to write it all down and share it with the rest of you all...
So, enjoy!