I just spotted a small typo in my previous mail.
[...]
>
> Assuming your pcf file has the name profile.pcf, convert it to a vpnc
> configuration file with
> # pcf2vpnc profile.pcf > profile.vpnc
>
this should be
# pcf2vpnc profile.pcf > profile.conf
> Copy it into /etc/vpnc/
> # cp profile.conf /etc/vpnc/
>
[...]