Follow these instructions
$this->bbcode_second_pass_code('', 'cd /tmp
wget http://archlinuxarm.org/os/pogoplug/mke2fs
chmod +x mke2fs
./mke2fs -j /dev/sda1
mkdir alarm
mount /dev/sda1 alarm
cd /tmp/alarm
wget http://archlinuxarm.org/os/pogoplug/bsdtar
chmod +x bsdtar
wget http://archlinuxarm.org/os/ArchLinuxARM-kirkwood-latest.tar.gz
./bsdtar -xpf ArchLinuxARM-kirkwood-latest.tar.gz
sync
umount alarm
')
the only real change was that the file will now download to the usb drive and extract it there.
Tom