The installation media are located in
http://ftp.fr.netbsd.org/pub/NetBSD/...-7.0.2/images/
NetBSD *.iso images are not hybids and will not boot when written to a usb thumb drive. For i386 and amd64, they supply *.img.gz files that are
gunzip(1) and written to a usb drive with
dd(1).
In order to retrieve
pkgin(1) you need to export your PKG_PATH in your shell. An example, using the default
/sbin/sh shell is at the following site. Warning this site comes with baggage.
pkgin howto
I just finished installing xfce4 in NetBSD. There are some on-line guides but there are now some quirks - the meta-pkg did not install tdb and generated errors. If you install tdb first, the xfce4 meta-pkg will completely load with a few warnings and no frank errors.