Right now I have a VFP7 project that utilizes some 3rd party communication componenets (activex) to create server that listens for HL7 messages from a client system. Upon receiving the message, I return an acknowlegement message to the client, then process the data I received from it.

1. I'm looking to redo this in a VB.NET project, and I'm thinking that as far as the TCP comms, I won't need to use a third party control? But I have no starting point for this. I'm wondering if someone else already has something like this or a good reference point I should look at. Some of things I have to be able to do, that my old system does, is open a port and listen, know when I have a connection coming in (New Connection), when a message comes in (New Message), and when the client disconnects (Connection Closed).

2. Also, I'm wondering if anyone on the forum is doing HL7 work?

Thanks

Kirk