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Hi All, I'm a final year student at the University of Mauritius. I am doing my research project on "how to find the shortest possible route between 2 areas of the Island of Mauritius using GIS" I am rather new to GIS but from what i have read, this can be done. What i have is ArcGIS 10.1 and a set of Aerial Imagery (provided by the University) which is in some hundreds of tiles of .ecw , .ers and .eww What I have been able to do by now is to load these tiles in ArcCatalog 10.1. According to my supervisor, I should be diving the different portions of land, between those 2 areas depending upon their type of use and their conversion costs to roads...only the ArcGIS will be able to output a possible shortest route between these 2 points. Can you people help me on how to proceed, or if its asking too much, can you direct me to tutorials of what i have do do. From what i have seen on previous threads here, you people are very cooperaing, so please guys HELP!!! I have only 6 weeks left. Thanks