I had some problems with the client support of the oacs-dav code. Asking dave he said that the AOLserver cvs code is newer than the tdav.tcl in openacs. It has better support for microsoft clients. The apis are different and configuration is different. It would take a day or two to port the current oacs-dav code to use this.
I had no time to take a closer look but the code than the one available in http://aolserver.cvs.sourceforge.net/aolserver/tdav/.
