Jim, in our environment, yes Cloverleaf is loaded on a Win2003 server. The problem we are having is in the sending of ORU’s to a UNIX server. What is really strange about the situation is that we also have an HL7 interface directly from our lab system, also a Win2X server, to this same UNIX box, and it works fine. It does appear to be more of an OS problem than Cloverleaf related.