The just-released RPG XML Parser is an open-source set of RPG subprocedures that extend the functionality provided by IBM's "XML Interface for RPG." You can download the RPG XML Parser, as well as contribute to the routines, at http://sourceforge.net/projects/rpg-xml-parser/.
To learn more about the XML on the iSeries, visit the following links:
XML Interface for RPG
http://alphaworks.ibm.com/tech/xml4rpg
XML on iSeries
http://www-1.ibm.com/servers/eserver/iseries/software/xml/?Open&ca=daw-prod-xml4rpg
XML iSeries Documentation
http://www.iseriesnetwork.com/resources/isndocfinder/xml.htm