[Samba] ldap smbpasswd automation (anyway around smbpasswd)

[oly]

okay managed to get accounts working by running smbpasswd username then
entering there password, 

is there anyway i can make it use ldap or fill in the list from ldap, i
have about 80 users in there and need to add about 800 more i do not
want to sit and enter the password for around 900 users must be an
easier way?

it was very easy  to get the accounts into ldap beacause i generated the
ldifs from a userlist using calc.