Links para instalação do Samba4

http://www.google.com.br/search?q=samba+4+download&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:pt-BR:official&client=firefox-a#q=samba+4+download&hl=pt-BR&client=firefox-a&hs=kkW&rls=org.mozilla:pt-BR:official&prmd=ivns&ei=Ik1uTubWEoOLsgLE1oDFDg&start=10&sa=N&fp=1&biw=1280&bih=888&cad=b&bav=on.2,or.r_gc.r_pw.

 

http://vidaopensource.wordpress.com/2011/06/06/instalacao-do-samba-4-como-domain-controller/

 

http://wiki.samba.org/index.php/Samba4/HOWTO#Step_1:_Download_Samba4

 

http://wiki.samba.org/index.php/Samba4/HOWTO#Video_demonstrations_of_this_HOWTO