Yes, it appears you do not have keyrings yet. You will need to create them, and then import the decryption key.
Run the following commands:
pgp --create-keyrings
pgp --import "C:\Program Files\PGP Corporation\PGP Command Line\idaddesktopkey.asc"
(I believe the above will work, Windows pathnames sometimes confuse me. You may need to move or copy the .asc file to your current directory, then run "pgp --import idaddesktopkey.asc")
You will then want to run
pgp --set-trust <the UserID or KeyID of the key you just imported> --trust --implicit
(but without the '<' and '>', as in
pgp --set-trust desktopkey --trust implicit
)
Regards,