This is the isapi_redirector2.dll built from the latest source snapshot
as of Dec 8, 2003. As usual, I have no environment in which to test
this, so I can not vouch for the functionality or stability, or verify
the effectiveness of any bug fixes in the latest source.

http://web.bvu.edu/staff/david/index.jsp?section=software&subsection=isapi&page=overview