GnuPG with Xampp Apache Friends

[Admin]

Please can anyone give me some guidance how to install GnuPG under Xampp on a Windows based laptop?

I want to use it with this:
http://blog.blacknight.com/nominet_automaton_web_interfac.html

Unless anyone has a (free) script I can use under Windows to manage my domains directly with Nominet automaton?

Many thanks

Admin