Ryan,
Thanks for trying to help.
This was only one of a number of problems we were having with 5.1.2. In the end we had to to do a fresh install and reverted to 5.0
I can now ping, print, and access files like I should be able to. I feel, from browsing around here, there are some issues that will take a little time to sort out in 5.1.2 be fore I'll try it again.
Jon