Dear Spyros,
I had a look at the solution you suggested it did not quite meet my needs. I need to create overlay map based on a data set of storm tracking data from NOAA. I have several factors to map, primarly wind speed. What is most important is showing the actual track of the storm based on Lat and Lon data pairs. This is the overlay map that I want to use along with US state outline map then plot my installation sites in the Graph.
I need guidence on creating the overlay map files from the tracking data.