Читаем ArcIMS Installation Guide
Step 2: Planning an ArcIMS site configuration
The ArcIMS features in the installation configuration diagram, illustrated in the same color, should be installed on the same machine.
The Connectors must be installed on your Web server machine.
The ArcIMS Servlet Connector should only be installed on the Web server machine.
The Author, Designer and Administrator can be installed on any machine. To install these applications, perform a Map Creation and Administration installation. A Map Creation and Administration installation will install Author, Designer and Administrator, and Service Administrator.
Spatial Server can be installed on one machine or many machines. Each Spatial Server installation needs to know the name of the machine where the Application Server is installed. The post installation will prompt you for the name of the Application Server and edit the monitor.properties file accordingly. One Spatial Server can not support multiple Application Servers, but one Application Server can support multiple Spatial Servers. An ArcGIS Authorization File is required to install ArcIMS Spatial Server.
Application Server can be installed on one machine or many machines. Each Application Server installation needs to know the name of the Web server. The post installation will prompt you for the name of the Web Server and edit the site preferences and diagnostics property files.
ArcMap Server is an extension of Spatial Server. You can not install ArcMap Server without installing Spatial Server. An ArcGIS Authorization File is required to install ArcMap Server. ArcMap Server is only available on Windows, Solaris and Linux platforms.
ArcSDE Services Monitor can exist on any machine where ArcSDE is installed.
Т.е. Вам необходимо, как минимум, установить на Web-сервере Вашего провайдера (если он согласится) сервлеты и нужные Вам коннекторы. При этом Web-сервер и компьютер должны отвечать системным требованиям для ArcIMS.
Перед тем как выполнять эту процедуру рекомендую потренироваться сначала на своих компьютерах с распределенной установкой компонентов ArcIMS на нескольких узлах. Желательно в той конфигурации железа-софта, которая будет использоваться в дальнейшем.