Projected Coordinate System Dialog
InfoWorks ICM has a default coordinate system that is used for all new networks. The co-ordinates entered for network objects are assumed to relate to this system unless you specify otherwise.
When using ArcGIS Engine or ArcGIS Desktop as the map control, if no projected coordinate system has been assigned to the GeoPlan by the user, ArcGIS Engine / ArcGIS Desktop automatically assigns the spatial information belonging to the bottom layer in the map.
Select Set coordinate system from the GeoPlan menu to display the dialog.
Click Edit to display the Geographic Transformations dialog. The dialog is used to specify geographic transformations to allow datasets which have different geographic coordinate systems to be mapped together.
See Selecting the Coordinate System for detailed instructions.