Hi MG
Also install smbclient and smbtree. IF smbfs is installed, uncheck it so it uninstalls.
In smb.conf you want to change the name workgroup = workgroup to workgroup = nameofyourworkgroup (whatever that name is of course).
smb.conf is located in /etc/samba/smb.conf
In terminal you can type smbtree to see if your computer is listed, if so, then your network is up and running. That don't mean you will see the share under Places/Network though, as there is a BUG in the program that displays shares now for over 2 years with no resolution to same in sight.
IF you can see your shares using smbtree, then you can mount them by going to Places/Network and clicking on the GO button and selecting LOCATION, in the bar type smb://IP of the machine you are trying to reach. This should bring up all the shared folders on that machine in the window. Selecting one of them will mount it. Unless it's a sub-folder in an already mountable folder above it. In this case, mount the folder above it and the file folder will then be mounted and usable.
As an aside, you may have to reboot your computer THREE times in succession to get the shares to show up in Places/Network, but that's no guarantee they will.
The folder Samba READS during boot up is /var/lib/samba which is a binary file, uneditable by us humanoids. I think the smb.conf overwrites this file on the 3rd boot-up if done in quick succession. Only because of HOW our 6 Ubuntu machines here behave!
Good Luck
TTUL Gary