They may have county borders in shapefile (ArcView) format. Then, depending on
your version of IDL, you can use these diectly, or translate them into
something ASCII based like DXF and read them in. Good luck -
I have seen numerous U.S. maps with state data, but I have yet to find a
away to display a U.S. map in SAS displaying county data. Does anyone have
sample code that links county fips codes to a U.S. map?