Two quick hints:

1. Search CPAN for Template - this returns a bazillion hits for Text::Template, HTML::Template, Apache::Template and many, many more...

2. Refrain from using Perl and use XML/XSL(T) whenever appropriate ;-)

Update:As ajt says correctly, "you don't need to refrain from Perl to use XML/XSL-T, Perl is good at that too! Try LibXML and LibXSLT". Very true and - in fact - I use these as well!

HTH!

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Cheers, Joe