So, a Windows user would go to
http://gpg4win.org/ and download the full version. You can google the site for its web reputation. You can verify the integrity of the download using Microsoft's fciv utility found here:
http://support.microsoft.com/kb/841290When you unzip fciv, drop fciv.exe into C:\Windows.
I successfully got up to this stage; I downloaded fciv.exe and when I tried to click on it, the black box with white text that kinda looks like really old MSDOS pops up for a few milliseconds and the box closes automatically.
The next part I can't figure out
That way you can pull up Command Prompt (Accessories) and run fciv.exe from any location.
Windows 8 doesn't have Accessories; you have to click on Search on the right side of the screen type Command Prompt.
I pull up the Command Prompt; it's another black box with white text that kinda looks like MSDOS and I type "fciv.exe." Nothing happens; it says "fciv.exe is not recognized as an internal or external command, operable program or batch file."