Domain Maps

[Paulo Gens Lemos]

Hi,
I am runing samba 207 PDC and want to map the unix users and groups to
windows users and groups.
I added the following lines to the smb.conf file:
    domain group map = /usr/local/samba/lib/domaingroup.map
    local group map  = /usr/local/samba/lib/localgroup.map
    domain user map = /usr/local/samba/lib/domainuser.map
then created the files in /lib
restarted the smbd
The log.smb file reports:
    Unknown parameter encoutered: "domain group map"
    ( the same for the other two parameters )
These were the instructions of the Domain NT FAQ in the samba.org web
site.
What is wrong with it?
Thanks

Paulo Lemos