Hi Sophie,
Thanks for your interest in 3DNA. I do not have access to a tablet PC (10" screen) with windows 7. Your said the unit is "without a mouse or keyboard." I am just wondering if there is any way to type in characters? I assume there must (at least) be a virtual keyboard to interact with it. If that's the case, then there are should be no problem in running 3DNA. You could have a try of the MinGW or Cygwin version.
Please let us know how it goes.
Xiang-Jun