samba setup:

sudo apt-get install samba

add this to the end of /etc/samba/smb.conf :

[shared]
path=/home/pi
read only = no
guest ok = yes

restart samba

sudo smbd restart

Setting up a Raspberry Pi Samba Server

http://www.cyberciti.biz/faq/adding-a-user-to-a-samba-smb-share/