Share folder creation in ubuntu 8.04(samba)

sudo smbpasswd -a username*
sudo cp /etc/samba smb.conf ~Desktop
sudo pico /etc/samba/smb.conf

*add this at the end of the smb.conf file

[folder_name]
path=/home/username*/Desktop/folder_name
available=yes
valid users=username*
read only=no
browsable=yes
public=yes
writable=yes

sudo /etc/init.d/samba restart

remarks:
*username is following the user account that you login in your ubuntu.