Usenet is usually accessible through a newsreader like Outlook Express. Most service providers have some sort of Usenet capability. You have to set up OE to connect to something like "news.virgin.net" or whatever ISP you use. You then download a list of newsgroups (there are thousands) and select those that you wish to "subscribe to" (join). It's almost totally unmoderated so you'll find some extremely bizarre stuff in there. But at least it's another possible avenue of support.
As I said, if you don't wish to venture in, then I'll post it for you. You can email me directly if you wish at [email protected]
I didn't realise the Devil's Arrows were in Harrogate. The 'knare' bit of the placename, in Knaresborough, is probably Norse. The 'Knarr' was one of their boat designs. There's another R. Nar in Cambridgeshire - it has the highly endangered Compressed river mussel. The Arrows seem similar to some Breton menhirs. They are already decorated - by those deep runnels - but there may be fainter patterns still unrecognised, as at ( http://antiquity.ac.uk/ProjGall/Pre2003/Scarre/scarre.html ).