Extracting what you've retrieved
After you have successfully downloaded the GIS layer, what you have is a ZIP archive of ZIPped Arc/Info Export files, a ZIP archive of shape files, or a ZIP archive of a GeoTIFF image file.
Accessing Arc/Info Export files (.e00):
If you receive a ZIP archive of ZIPped Arc/Info Export files, each of the individual ZIP Archives in the delivery bundle will need to be UnZipped to extract the entire series of spatial files.
The recommended method is to create a temporary folder on your system, unzip the contents of the delivery bundle at that location and then unzip each of the individual ZIP Archives.
To access the data in ArcView you will need to use the IMPORT71 utility which is located at: Windows START/ PROGRAMS / ESRI / ArcView GIS / IMPORT71. You will then need to specify the Export Filename (the .e00 file) and the Output Data Source. The Output Data Source will be whatever you choose to name your new Arc/Info coverage.
If you are using Arc/Info you will need to use the IMPORT command to convert the Export files to Arc/Info Coverages.
Accessing shapefiles (.shp, .shx and .dbf) and GeoTIFF files (.tiff):
If your unzipped bundle consists of three spatial files of the type .dbf, .shp, and .shx, or one file of the type .tiff, they need no further processing and may be accessed in ArcView, Arc/Info or any other graphics program that can read and display shape files or GeoTIFF formatted files.