Perl Rich Site Summary (RSS) tools

First time poster on soureforge... Trying to put enclosures in my RSS using XML::RSS, but no matter what I try to add, the enclosure is ignored...

This is Dumper( %item )

$VAR1 = (
'enclosure' => {
'type' => 'text/html',
'length' => '877',
'url' => 'http://www.lauraashley.com/'
},
'link' => 'http://www.clarkeology.com/stokey/22/12/',
'description' => 'Just trying to get a catalogue form lauraashley.com/, and it won\'t accept my form submission from Mozilla. Someone fix it please, they have a nice kitchen table that we want. Had a similar issue with johnlewis.com, can\'t tell if it\'s accepted my request ... (54 words)',
'pubDate' => 'Tue, 2 Nov 2004 13:41:33 GMT',
'permaLink' => 'http://www.clarkeology.com/stokey/22/12/',
'title' => 'If you blog it, they will come'
)

and then I
$rss->add_item( %item );

The item's added every time, but the enclosure is ignored... are enclosures not supported in RSS2.0? It's driving me mad... I'm off to investigate adding enclosures as a non standard module, but it should be part of the standard I'm sure...