copy and rename xml nodes

[pdmorete]

Hi, I have the following record structure in xml documents. My intention is to get <Metadata> nodes with value "dc.Title" on "name" attribute. Then I wanto to make a copy of the selected <Metadata> element, rename them to <MetadataNoDiacritics> (or mark them with an attribute for later retrieval) and append them back on its appropriate place on the tree structure.
I have tried with elementtree findall and I can retrieve the nodes I need but I can't rename them and append them back to the original structrue. Thanks for help.

<DirectoryMetadata>​

<FileSet>​

<FileName>1948\.pdf</FileName>​

<Description>​

<Metadata mode="accumulate" name="dc.Title"> Títle with diácritics</Metadata>​

<Metadata mode="accumulate" name="dc.Creator">Smith, Ronald</Metadata>​

<Metadata mode="accumulate" name="dc.Date">1949</Metadata>​

<Metadata mode="accumulate" name="dc.Relation^isPartOf">Journal </Metadata>​

</Description>​

<FileSet>​

<DirectoryMetadata>​