Can’t network a computer

[LRM]

I cannot figure out how to network a computer to the host computer that has powerchurch on it. I’ve shared the powerchurch file on the host computer. When I go to the computer I want to network to the host computer…..when I find the correct computer and double click on it, it asks for the computer name and credentials. What are credentials??????? I can’t get past this box. The host computer has a PIN number to login to it. I tried using the PIN number in the credentials box but that doesn’t work. I see the host computer but can’t get into it to get to the powerchurch file to run the Netsetup because it wants credentials. Can you direct me a bit???? When I tried putting the exact location of the file in the address bar to do a search, it never even searched.