Many customers showed interest in deploying NSClient++ to multiple machines across a windows domain, without the need to log in remotely or be physically present on these machines.
If you are using Nagios to monitor a windows environment, you can use FTP as a component to deploying NSClient++. We just posted a document on the Nagios Library, which explains how to configure FTP for Nagios. You can review it here.
Additional information on deploying NSClient++ via FTP in Nagios will be available soon.