I think Michael's advice was meant very seriously. I think what he's trying to advise you is to be cautious about what you're going to try to do here with any automated script for adding domain hosting, because if DH support finds out you are doing it for domain tasting, you may find yourself looking for a new host.
After all, he wouldn't want you to go through all the trouble of setting up here only to have your time go to waste if you got kicked out.
So when you say "add a 100 domains at a time", you mean adding hosting for 100 domains at a time, right, not registering 100 domains at a time through Dreamhost? Or do you mean both?
And is this a one-time thing or is this something you're going to have to do regularly? If it's a one-time thing, you might consider asking DH support if they would do it for you.
What are [color=#CC0000]50DISK50[/color], [color=#CC0000]3DOM50[/color], and [color=#CC0000]1IP1DOM50[/color]?
They're Dreamhost coupons!