I have a technical issue.  I’m trying to network my sister’s computer to my dad’s computer.  both of these computers have been networked to each other before and to other computers (well not my sister’s)

I’ve shared the files, I’ve got the path names written down so i know preciesly what is named what for the path that i’m sharing on.  When i open windows explorer i even see the other computer listed on the network, but when i try to network them, or recognize the other computer it says something about not having permission or access or something.  I’ve never had a problem in the 4 other computers i networked at numerous occassions with permission.  I don’t know how to get to it or make it say yes to permission.  It probably is a very very easy solution, but one i can’t find.

please help. 

Sincerely,
The computer technician of this family