If your downstream sites decide to keep NJE, they will need to move their connection to another site, which will become their upstream node for NJE. The LISTSERV-NJE topology will follow automatically. Your server will be linked to a suitable LISTSERV-NJE server acting as a gateway (so that NJE users sending a GET XYZ MODULE command to your server actually get a NJE file in their reader). It can also be linked to any number of other NJE or TCP/IP servers. If your downstream sites decide to leave NJE and migrate to LISTSERV-TCP/IP, their servers will (presumably) be linked to yours, with yours being linked to a NJE server as described above. There is, however, no fixed rule; we'll just do whatever is best for spreading the traffic and minimizing the load. Eric