We've been informed that we can run Network Analyst connecting to StreetMaps Premium through ArcGIS Engine alone. So far the only references I have been able to find give me the impression that StreetMaps can only be accessed through ArcGIS Desktop or ArcGIS Server. Is this true? We are building a stand alone application written in C# that does not display any maps and utilizes the Network Analyst to perform routing calculations. So far we have successfully done this with various sample files, however I have yet to locate a way to connect to the StreetMaps to utilize the streets network dataset. Any help in this matter would be greatly appreciated.