1. Quantum GIS 1.6.0 Copiapo with GRASS for Windows - The custom installation contains various python dependencies included to run external python plugins.
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2. Quantum GIS 1.5.0 Tethys with GRASS for Windows
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3. Quantum GIS 1.4.0 Enceladus with GRASS - Standalone Windows Installation File
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Quantum GIS Installation Instructions
1. Download Microsoft C Runtime Libraries and install the runtime libraries
2. Download the Quantum GIS installer and follow the on screen instructions