For those who are interested, I stumbled across a Perl & XML
book over at O'Reilly. It's slated to come out in April (2002), at which point I'll definately be adding it to my collection. Here's the description:
Perl & XML is aimed at Perl programmers who need to work with XML documents and data. This book gives a complete, comprehensive tour of the landscape of Perl and XML, making sense of the myriad of modules, terminology, and techniques. The last two chapters of Perl and XML give complete examples of XML applications, pulling together all the tools at your disposal.