[Samba] Location of private/secrets.tdb

[Cook Tom-FTC020]

I installed the pre-complied samba-2.2.4-sparc-solaris-2.8.pkg. smbd needs
to write to /usr/local/samba/private/secrets.tdb. How can I change the
location of that directory? (/usr/local/samba is NFS mounted. Root is
nobody, I could make it writeable by nobody, but multiple hosts could write
to it). I am using security = server and don't think I even need it, but
smbd won't start if it can't write to it.