I am not playing a lot with KDE (mainly console, everything runs faster), but one you get to know it, Samba is foolproof.
First, you need to set up a directory on Linux box that Samba will share with the rest of your PCs. Next you need to tell Samba which user will have privileges (and with what rights) to access that directory.
I'm not sure if and how can it be done through LinNeighbourhood, but there must be a control panel for Samba (try KDE Control Panel, Networking), and set up all these things there.
The easiest way is to set up user guest with no password, and make shared directory available to everyone (chmod 777), then restart Samba, after changes have been made.
Another way is to run Samba's web-based configuration utility called swat(if included with your Linux Distro). Try to point your browser (in Linux) onto http://localhost:901,
and follow from there.
The best thing to do is to change smb.conf according to your needs, but it is quite possible that this bold adventure will finish by you being completely bold after just few minutes! ;)