The ArcMap Server feature is not listed in the ArcIMS setup program or in the ArcGIS ArcIMS Add/Remove Programs option after installing.
Internet Explorer 5.0.1 or higher and MDAC 2.5 are required for ArcIMS ArcMap Server. If your system does not meet these requirements, the ArcMap Server feature will not be available in the installation or Add/Remove dialog box.
If you do not have Microsoft Data Access Components (MDAC) 2.5 or higher, the install will optionally let you install it the first time you install ArcIMS.
To add ArcMap Server after installing ArcIMS, you must manually install MDAC 2.5 or higher and/or Microsoft Internet Explorer 5.0.1 or higher before using Add/Remove to add ArcMap Server.
You will need to reboot your system after installing MDAC.