Big thanks to Oogie and Truffula for figuring this out (and again to Oogie for dropping me a line - cheers dude!).
Apparently Elizabeth Moora has a Facebook profile (I'll post a link to the profile or picture when she confirms my pending friend request), where she posted a picture with the numbers:
Another picture, found on the hetfet.org gallery had the numbers:
Then, all you have to do (I say 'all you have to do', only I probably wouldn't have thought of it...) is stack the numbers on top of each like so:
and then read them vertically, so you get 10-3-17. Hey presto, the 7th (working!) code. We have the 4th rune now also, which is 'O'. Well done guys!