As you probably know, Gaussian is commercial software. If you have a license for the Windows version, it is available as a precompiled binary that has a setup.exe file. Installation should be straightforward. However, you need to be sure to set up your environment variables for the g09 root directory and the Gaussian scratch directory.

Dear Sidatri,

Download both gauss view and gaussian software. Use ".exe" then. Also use the serial number during installation. The activation Serial number is available in the downloaded file.