As of the last time I spoke with STK support on this
very problem (which admittedly was a few months ago)
Libattach was not supported on Windows 2003 and I
could not figure out any way to get it to work. Again,
that may have changed because I was using Version 1.3
of Libattach but if they don't mention it in the docs
it probably still isnt supported. Your best bet is to
call STK and ask.

"A wise man once said 'Wherever you go, there you are'"
      -Mike Brady