[Samba] roaming profiles

[Wojciech Giel]

Hi 
I trying to configure Samba PDC/BDC with LDAP master/slave backend and file 
server as a Member serwer.
PDC/BDC with ldap is working. But now I 'm in the middle of configuring 
roaming profiles but I don't understand some issues.
Samba PDC/BDC with ldap's is on ubuntu server whereas samba member server is 
on opensolaris with zfs based storage. 
users Home directories will be on Samba Member server(OXHILL), and inside 
these directories will be roaming profiles directory and redirected folders. 
I dont understand roaming profiles topic could some one explain it is in a 
simple way.
As I understand on PDC in order to have roaming profiles I have to add 

[global]
.....
        logon script = scripts\logon.bat
        logon home = \\OXHILL\%U
        logon path = \\OXHILL\%U\.profiles
        logon drive = H:

[homes]
        comment = Home Directories
        valid users = %S
        read only = no
        browsable = no

[netlogon]
        comment = Network Logon Service
        path = /var/lib/samba/netlogon
        browseable = no
        read only = yes
        guest ok = yes
        locking = no

[profile]
        comment = Profile Share
        path = /home/%U/.profiles
        read only = no
        profile acls = yes

so home directory  is on OXHILL and profile directory is inside that 
directory. But should netlogon share be on that machine too? What for is this 
profile share is it necessary if I have logon path?

on Samba member (OXHILL) 

[homes]
        comment = Home Directories
        path = /home/%U
        read only = no
        browsable = no
        root preexec = /usr/bin/homecreate '%U'

should I add profile and net logon share? 
Please somebody help me to understand relation ship between logon path and 
netlogon profiles, and how to do it correctly. 
thanks for any help