To Open a GIS File

Choose File > Open > Browse.
The Open dialog opens.
To change the filter, select "Shapefiles (*.shp)," "MIF/MID Files (*.mif)," or "TAB Files (*.tab)" from the Files of type: list.
(Optional) To select a different source disk drive or directory, choose the desired drive or directory from the Look in list.
Select the desired file.
Click Open.