things to check..
has the lisa service started?
also is the smbclient service started.
when you scan the selected computer using LinNeighbourhood
do you right click or click on the mount button to mount .. Then enter any details..
SMB Username: must be a valid smb user and win pc user
SMB Password: "" "" "" "" "" "" "" "" ""
if it works from a terminal then it will work from the LinNeighbourhood
make sure you can ping the name not the ip address from the linux machine