It's only working on my system for now and inaccessible to others but it does at least breathe again in this form:
I compiled the original source code and it's running successfully as a published web service under IIS. I reconstructed the SQL database from looking through the SQL commands found within the service source code. KSDCommander client can successfully connect and read/write to the DB via the service.
One issue is that unless I or somebody else fancies spending hours rewriting it into PHP or something, it needs a public Windows Server, if anyone's got one? I suspect that would be the major obstacle preventing it from living again to the public.
It might be fun to rewrite it to run under Linux, but that would depend on time.