XML UTF-16 encoding problem

Hi,
I am facing a problem with XML UTF 16 encoding and need help on this.
When I use UTF 16 encoding with MSXML Parser 3.0 and when I use the function
loadXML to load the XML string into the XML DOMDocument it returns False.
i.e it doesnot load the document. Can you suggest  me a solution to this
problem ASAP.

UTF-16 or UCS-2 is a requirement since we are using Chinise, Japanese and
Korean support for the application for which we have to give unicode
support.

TIA

Raj