Send UNIX Command Authentication?

I'm using a script suggested at MacEnterprise http://macenterprise.org/content/view/240/140/ that binds a client to AD and OD via the ARD send UNIX command.
I'm having an issue with the dsconfigldap line. If I send it via ARD with no user logged in on the remote I get an "Unable to obtain auth rights to update DirectoryService LDAP configuration." error. If I login to the remote or send the same command from the terminal, all is OK.

I've tried using sudo, but that requires a password. I'd like to be able to send this command to mutiple machines without having to log into them.

Any suggestions?


Regards
Dave