I was hoping I could get a direction from you guys on this matter.

I'm fairly fresh to "complex" PHP (doing more then simple internal processing with second-rate mySQL tables with probably poorly-built classes). I'm trying to figure out how to get XML data from an external site, after sending it POST data. I know how to parse using SimpleXML, but all the XML I've worked with has been local, and I've never had to send POST data to retrieve an XML.

Thoughts on where to start with this would be appreciated.