Redhat box viewable, but samba share not accessible from windows

[paulco...@gmail.com]

I am trying to set up samba, and I have used webmin to configure the
following smb.conf file. I am getting as far as finding the redhat box
in windows networking, but when I click on the redhat box, I get the
following error message

"\\merctest is not accessible. you might not have permission to use
this network resource. contact the administrator of this server to find
out if you have access permissions."

"Configuration information could not be read from the domain
controller, either because the machine is unavailable or access has
been denied"

# This is my smb.conf file
# This is the main Samba configuration file. You should read the #
smb.conf(5) manual page in order to understand the options listed #
here. Samba has a huge number of configurable options (perhaps too #
many!) most of which are not shown in this example # # Any line which
starts with a ; (semi-colon) or a # (hash) # is a comment and is
ignored. In this example we will use a # # for commentry and a ; for
parts of the config file that you # may wish to enable # # NOTE:
Whenever you modify this file you should run the command "testparm"
# to check that you have not made any basic syntactic errors.
#
#======================= Global Settings
=====================================
[global]
log file = /var/log/samba/%m.log
load printers = yes
socket options = TCP_NODELAY SO_SNDBUF=8192 SO_RCVBUF=8192
wins server = 192.168.1.1
dns proxy = no
netbios name = merctest
server string = reports
password server = 192.168.1.2
default = reports
unix password sync = yes
workgroup = shipmercury
os level = 20
printcap name = /etc/printcap
security = domain
max log size = 50

[homes]
comment = Home Directories
writeable = yes

[printers]
comment = All Printers
path = /var/spool/samba
browseable = no
# Set public = yes to allow user 'guest account' to print
printable = yes

# This one is useful for people to share files ;[tmp]
; comment = Temporary file space
; path = /tmp
; read only = no
; public = yes

# A publicly accessible directory, but read only, except for people in
# the "staff" group ;[public]
; comment = Public Stuff
; path = /home/samba
; public = yes
; read only = yes
; write list = @staff

# Other examples.
#
# A private printer, usable only by fred. Spool data will be placed in
fred's # home directory. Note that fred must have write access to the
spool directory, # wherever it is.
;[fredsprn]
; comment = Fred's Printer
; valid users = fred
; path = /homes/fred
; printer = freds_printer
; public = no
; writable = no
; printable = yes

# A private directory, usable only by fred. Note that fred requires
write # access to the directory.
;[fredsdir]
; comment = Fred's Service
; path = /usr/somewhere/private
; valid users = fred
; public = no
; writable = yes
; printable = no

# a service which has a different directory for each machine that
connects # this allows you to tailor configurations to incoming
machines. You could # also use the %u option to tailor it by user name.

# The %m gets replaced with the machine name that is connecting.
;[pchome]
; comment = PC Directories
; path = /usr/pc/%m
; public = no
; writable = yes

# A publicly accessible directory, read/write to all users. Note that
all files # created in the directory by users will be owned by the
default user, so # any user with access can delete any other user's
files. Obviously this # directory must be writable by the default user.
Another user could of course # be specified, in which case all files
would be owned by that user instead.
;[public]
; path = /usr/somewhere/else/public
; public = yes
; only guest = yes
; writable = yes
; printable = no

# The following two entries demonstrate how to share a directory so
that two # users can place files there that will be owned by the
specific users. In this # setup, the directory should be writable by
both users and should have the # sticky bit set on it to prevent abuse.
Obviously this could be extended to # as many users as required.
;[myshare]
; comment = Mary's and Fred's stuff
; path = /usr/somewhere/shared
; valid users = mary fred
; public = no
; writable = yes
; printable = no
; create mask = 0765

[reports]
printable = no
writable = yes
only guest = yes
public = yes
path = /u/mercury/reports/