Hello and welcome to justanswer, My name is ***** ***** i will be assisting you today,
You can download Neat desk V. 5 from this link : https://www.neat.com/helpcenter/download-neat-software/
Once you’ve completed the download, click on it and follow the onscreen instructions to install it.
Here is a link for the Installation Guide : http://www.neat.com/helpcenter/neat-installation-guide/
Hope this help,