Using XML Schemas in C++ Unmanaged Code

Hi
I am trying to use a "from" schema and a "to" schema to transform an XML stream in unmanaged C++ using the MSXML3/MSXML4 DLLs. Does anyone know how to do this?
Thanks,
Royce
[198 byte] By [RoyceF] at [2007-11-19 9:47:19]