1. Obtain Quantum GIS
Obtain Quantum GIS from:Â http://www.qgis.org/
2. Open your TAB file
3. Save your new Shapefile
Click Layer>Save As…
4. Select the correct Map Projection
 To ensure that you always have the correct map projection you may need to re-project your shapefiles for use with GMaps Plugin.
Choose “Selected CRS” from the dropdown.
Click Browse and select:Â Geographic Coordinate Systems>WGS 84