The installation process for GeoModeller is straightforward:

1. Download the latest public release of GeoModeller available here
2. Double click the .msi installer
3. Review the licensing terms and installation notes
   
4. Customize the installation path according to the installation notes
5. Include the VC++ Redistributable Package if this is your first install
   
6. Click Install

If you are using a dongle:

1. Browse to the installation directory (default is C:\GeoModeller\GeoModeller4.X.Y_x64_xxxxxxx) 
2. Find the extra_installs\dongledriver directory
   
3. Double click the Sentinel System Driver Installer executable file
4. Do a Complete installation