Creating the network storage
The remaining free space on the SD card was partitioned and formatted as FAT32. This was performed on another linux machine to save time.
On the RPi, fdisk -l was used to find the name of the partition.
Then added the partition by adding the following line to /etc/fstab
/dev/mmcblk0p4 /media/data vfat defaults 0 0
Trying the NAS instructions on http://elinux.org/R-Pi_NAS#Configure_a_public_storage_area_on_the_RPi
updated the instructions with pdbedit -a -u bufo to add the user 'bufo' to samba, as per;
The private share is working, but public isn't.
Trying again with these instructions http://www.debuntu.org/guest-file-sharing-with-samba - it seems to work ok.
A man called Jeremy has this working with lightpd on Archlinux, his notes may be more ledgible too;
Useful stuff about getting the RPi online;