Thanks for your advice and again please excuse if I am a newbie on all this. When I have tried creating a network data set, the suffix is "NDS". However, in looking through all the files from StreetMap, I do not see any files with this suffix. Additionally, when I open up the file: "StreetMap North America.mxd", I do not get any choices (except Options) when I look at the Network Analyst drop down menu. Please advise how to proceed.
Thanks,
Jon Mark