Hi Voreth,
I've spent a bit of time at Birchover and have visited the Andle Stone and Nine Ladies on Stanton Moor, and also Nine Stones Close. Must admit I've never been to Dol Tor, didn't know it was there. Nine Stones Close is on common land as far as I know, certainly it is visited on a very regular basis, the Andle Stone is in the middle of a farmer's field, but with a footpath passing it. If Dol Tor is maintained by English Heritage, they're probably the best starting point.
english heritageI will no doubt be over in Birchover within the next couple of months, if I can, I'll find out and pm you. Unless anyone knows already.