adding samba attributes to multiple unix accounts

Hi!

I'm a newbie at ldap and the problem I face now is that I have to add
certain attributes to already existing entries.
ie, right now I have a populated ou=People with 50+ users...and I want
to add the samba attributes like "sambaHomePath:", "sambaHomeDrive:"
etc..etc..to these already existing users.
How do I proceed?

Is there a program/commandline way to add these attributes in a
"batch", in an automated way? (I would find it tedious to edit an ldif
file for every user)

Any help is appriciated.