David,

just a quick question about state. If the client creates a server object, and retains a reference to that object, isn't state maintained between method calls to the server? Why would the server lose the context (any tables open, SETs put in place?

For the Telco billing application we are developing (up to 20 users on a LAN), I think we'll look at a Citrix WinFrame solution to avoid breaking what we've got, but with other apps, we might have to envisage DCOM, building the UI separation stuff into the design from the start.

Best wishes,
Neil