Recently I have been looking for XML search tools, I write applications that require regular search a number of associated XML documents, I was meant to see whether the document with the data I want to match the data, but there are time, I also want to find out the data output. so I carefully look forward to the implementation of various versions of XQL, just found a little tool called XQEngine to solve this problem. I would like to know how to use the XQEngine to XML files in my search for the string us want to find the data. Please suggest. Thanks in advance.