Here's my smb.conf:
#======================= Global Settings ====================================
[global]
# server string is the equivalent of the NT Description field
netbios name = myLinux
server string = Samba %v on %h
hosts allow = 192.168.1. 127.
workgroup = WORKGROUP
printcap name = /etc/printcap
load printers = yes
log file = /var/log/samba/log.%m
max log size = 50
security = user
smb passwd file = /etc/smbpasswd
socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192
local master = yes
dns proxy = no
unix password sync = yes
passwd program = /usr/bin/passwd %u
comment = Samba %v on %h
encrypt passwords = yes
map to guest = never
password level = 0
null passwords = no
os level = 34
preferred master = yes
domain master = yes
domain logons = yes
wins support = yes
dead time = 0
debug level = 0
logon script = %m.bat
logon path = \\%L\Profiles\%U
#============================ Share Definitions ==============================
[homes]
comment = Home Directories
browseable = yes
writable = yes
# Un-comment the following and create the netlogon directory for Domain Logons
[netlogon]
comment = Network Logon Service
path = /home/netlogon
guest ok = no
writable = no
share modes = no
[printers]
comment = All Printers
path = /var/spool/samba
browseable = no
# Set public = yes to allow user 'guest account' to print
guest ok = no
writable = no
printable = yes
[share1]
comment = BASIS files
available = yes
browseable = yes
path = /usr/myfiles
public = yes
guest ok = yes
writable = yes
only user = no

Thanks for your help.