Hi,
the xdk's are microsoft copyrighted material. Asking for them on this forum is like asking where you can download original games.....
you can perfectly use what you have with the microsoft visual studio 2003 package.
Anyone with a MSDN subscription can download that package from the microsoft MSDN website.
You will still develop native C and C++ applications with visual studio 2003. You don't need to develop for dot net.
regards.