[xslt] modifing xml using xslt

["Micky MeNeZeS" <mickymenezes greymatterindia com>]

Hi,

I have the following xml.

<Contact>
    <Item>
        <userid>micky</userid>
        <password>micky</password>
    </Item>
</Contact>

I want to create such a xslt so that resultant xml document will be same as
above but with different values.
somthing like below
<Contact>
    <Item>
        <userid>some</userid>
        <password>some</password>
    </Item>
</Contact>

Please help...............
Regards,
Micky