Step 1. Make an empty Arc GIS 9.3 model in InfoSWMM using the Arc GIS Default when initializing the model, Step 2. Save the empty model and then copy and paste the files from the Arc GIS 10 ISDB folder to the Arc GIS 9.3 folder, but not the MAP sub directory, Step 3. Open the Arc GIS 9.3 mxd file and then use the Tool Update Map from DB after Initialization, Step 4. Zoom to the model extents and then set data frame to the model view so it can be used more efficiently in the future before saving the model.
An alternative Method
Note: Steps in converting a Arc GIS 10 Model to a Arc GIS 9.3 Model in InfoSWMM or InfoSewer
1. You have a Arc GIS 10 file from another computer that was created with Arc GIS 10+
2. 1. Using Windows Explorer 2.Delete the mxd file and make a blank mxd file with the same name as the IEDB folder or in this case fm_sample.mxd 3.Click on the new file and you now have Arc…