how to apply an XSL transformation on a "pseudo-HTML" file

hi,

i'd like to transform an pseudo-html file - i.e. html file including some 
user-defined tags such as <meta:element>, <meta:value>,... - with an XSL 
stylesheet
tools such as tidy do not help me because they do not recognize my tags and 
remove/move them
could XSL directly be applied on such an html file ?

could someone help me ?

AtDhVaAnNkCsE

Fabrice


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