language selection with xml

Hi there, I would like to create a multilanguage website with php. I heared the easiest way is to create an xml file and use this package: http://freshmeat.net/projects/php-xml/?topic_id=92%2C96%2C914 This still looks complicated for me, beside the fact that it depends on an external package. Is there not a possibility to do this without an external package, just with php? Thanx for any info on that, Merlin