Namespace support in Xalan?

[Esther Parrilla Endrino]

Hi all,
I have an xml file that I want to transform into html using Xalan.
This file includes in its root tag the reference of the schema that 
validates it, and the namespace used for the file.
When I try to transform the file I always get an erroneus output...but 
if I delete the references to schema and namespace from the root tag 
then the tranformation is OK... Does Xalan have to be configured in a 
special manner to support transforming XML files with schema references 
and namespaces?
Do I have to reference in my XSL the XML tags in a special way such as 
'namespace:tag' or something like that?

Thanks in advance,
regards,
e*
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