Failed to execute child process "testparm"

How are you wanting to share the data? FTP? Samba? SSHFS?

I have a wired/ wireless router with two microsoft OS's and one with Ubuntu 10.10. The windows computers are showing up in the Network List in Places but can't access them as before. I would like to be able to share files back and forth between computers and use printers also, but that can wait. I'm not sure what to use.. I did download Gadmin-Samba but not sure how to set up. Instructions are vague..

What version are the windows OSes?

you don't need gadmin, samba works fine in nautilus. You can also use smb.conf with great results.

The one is Windows 7 starter and the other is XP.. What is Nautilus? Removed Gadmin-Samba.. Have Samba installed and found smb.conf.
What next? Oh, Here is what's in the smb.cnf:

[global]
netbios name = Samba24
server string = Samba file and print server
workgroup = Workgroup
security = user
hosts allow = 127. 192.168.0.
interfaces = 127.0.0.1/8 192.168.0.0/24
bind interfaces only = yes
remote announce = 192.168.0.255
remote browse sync = 192.168.0.255
printcap name = cups
load printers = yes
cups options = raw
printing = cups
guest account = smbguest
log file = /var/log/samba/samba.log
max log size = 1000
null passwords = no
username level = 6
password level = 6
encrypt passwords = yes
unix password sync = yes
socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192
local master = no
domain master = no
preferred master = no
domain logons = no
os level = 33
logon drive = m:
logon home = \\%L\homes\%u
logon path = \\%L\profiles\%u
logon script = %G.bat
time server = no
name resolve order = wins lmhosts bcast
wins support = no
wins proxy = no
dns proxy = no
preserve case = yes
short preserve case = yes
client use spnego = no
client signing = no
client schannel = no
server signing = no
server schannel = no
nt pipe support = yes
nt status support = yes
allow trusted domains = no
obey pam restrictions = yes
enable spoolss = yes
client plaintext auth = no
disable netbios = no
follow symlinks = no
update encrypted = yes
pam password change = no
passwd chat timeout = 120
hostname lookups = no
username map = /etc/samba/smbusers
passdb backend = tdbsam
passwd program = /usr/bin/passwd '%u'
passwd chat = *New*password* %n\n *ReType*new*password* %n\n *passwd*changed*\n
add user script = /usr/sbin/useradd -d /dev/null -c 'Samba User Account' -s /dev/null '%u'
add user to group script=/usr/sbin/useradd -d /dev/null -c 'Samba User Account' -s /dev/null -g '%g' '%u'
add group script = /usr/sbin/groupadd '%g'
delete user script = /usr/sbin/userdel '%u'
delete user from group script = /usr/sbin/userdel '%u' '%g'
delete group script = /usr/sbin/groupdel '%g'
add machine script = /usr/sbin/useradd -d /dev/null -g sambamachines -c 'Samba Machine Account' -s /dev/null -M '%u'
machine password timeout = 120
idmap uid = 16777216-33554431
idmap gid = 16777216-33554431
template shell = /dev/null
winbind use default domain = yes
winbind separator = @
winbind cache time = 360
winbind trusted domains only = yes
winbind nested groups = no
winbind nss info = no
winbind refresh tickets = no
winbind offline logon = no

[homes]
comment = Home Directories
path = /home
read only = no
available = yes
browseable = yes
writable = yes
guest ok = no
public = no
printable = no
locking = no
strict locking = no

[netlogon]
comment = Network Logon Service
path = /home/netlogon
read only = no
available = yes
browseable = yes
writable = no
guest ok = no
public = no
printable = no
locking = no
strict locking = no

[profiles]
comment = User Profiles
path = /var/samba/profiles
read only = no
available = yes
browseable = no
writable = yes
guest ok = no
public = no
printable = no
create mode = 0600
directory mask = 0700
locking = no
strict locking = no

[printers]
comment = All Printers
path = /var/spool/samba
browseable = yes
writable = no
guest ok = no
public = no
printable = yes
locking = no
strict locking = no

[pdf-documents]
path = /home/pdf-documents
comment = Converted PDF Documents
available = yes
browseable = yes
writeable = yes
guest ok = yes
locking = no
strict locking = no

[pdf-printer]
path = /tmp
comment = PDF Printer Service
printable = yes
guest ok = yes
use client driver = yes
printing = bsd
print command = /usr/bin/gadmin-samba-pdf %s %u
lpq command =
lprm command =