Adding AD entries to the Auth and Contacts via script?

Is it possible via a shell script to add an AD entry to the Authentication and Contacts tabs of Directory Access?

I can script the machine's addition to the AD domain just fine, but then I have to go in to Directory Access manually and add the Auth and Contacts entries, which well ... sort of defeats the point of using scripts.

In Panther, I could bind and unbing an image machine and the entries would remain, but Tiger seems to clean itself up better.

Any ideas?

Thanks!