Well this really isnt the board to be talking about samba shares, but my friends when I was on a serate network could access my files with this simple smb.conf setup:
[global]
workgroup = A1
server string = MP3 SharePalace
security = SHARE
log file = /var/log/samba/%m.log
max log size = 0
socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192
local master = No
dns proxy = No
wins server = 192.168.10.1
session options = SO_KEEPALIVE
[MP3s]
comment = Mp3s
path = /home/nashirak/mp3/
guest ok = Yes
this is just a sample setup I have running.
Sounds like you dont have the permissions set correctly. May I recommend using SWAT. Its a very nice graphical way to edit the smb.conf file. Try posting to some linux boards as they will give you better assistance.