http://www.mini-lathe.com/
This should help you a little look at the versions page - It explains the 7x stuff fairly well. Its blurbs about the 8x12/14 is not even close to correct though.
If you do get a 7x...
http://www.littlemachineshop.com/Inf...UsersGuide.pdf http://www.littlemachineshop.com/pro...php?category=1