>1) Having confidence that the service providor will be in business next year
>2) The providor being able to handle the bandwidth
>3) Some security issues

Doug, typically, if you are to rely on someone elses web service, yeah, these are things you need to consider. But in response to Jim's "Server" component, he would be the Service Provider. The web service could run on his Internet server, or Intranet server, or on any machine with IIS anywhere on his LAN. Security and bandwith are up to him.