XSLT Text replacement

[GIJOEROCK]

I'm new to XSL and I'm looking for a way to replace text in XML.My source XML is:\[code\]<A> <key>One</key> <string>value1</string> <key>Two</key> <string>value2</string> <key>Three</key> <string>value3</string></A>\[/code\]What I want is to replace only one of the element.The result should be:\[code\]<A> <key>One</key> <string>value1</string> <key>Two</key> <string>xxx</string> <---- change this (for key Two) <key>Three</key> <string>value3</string></A>\[/code\]How to create an xsl stylesheet to manage this?Thanks in advance!