Address: IP or hostname of pc you are connecting to.
Credential: username and password
And so on: other relevant info, eg: domain, workgroup name etc.
You can bypass all the instructions by just typing into caja address bar the smb location you want to access. Eg if you have a pc on the ip 192.168.1.44 you could type:
smb://192.168.1.44
Into caja address bar. (This assumes that pc is configured/sharing folders on the network).