Thanks for your reply, but I think that setup would probably be a problem for me as I am trying to interface the computer with LabVIEW on it with VOIP equipment that is sending data over VOIP protocol. The hardware is currently a VOIP capable card and could possibly include a VOIP server for many different communication lines. This is why I think a .dll interface may be needed, but I'm looking at all different avenues. If you have any questions, please let me know. Any help is appreciated. Thanks.