Deleting Blackarmor protection on Maxtor Drive

I have a 250G Maxtor Blackarmor portable drive. I would like to use it as just removeable storage, without having to unlock it everytime I use it. I have the security code, so can get into the drive. I have tried wiping the drive with Partition Wizard, and it appeared to do that. However, while all the data on the drive was cleaned off, the Blackarmor protection still remained.
I have tried wiping the drive with DOS based programs, but you can’t do anything unless the drive is unlocked, which I can’t do in DOS (I don’t think).
Does anyone know a way to remove the Blackarmor program from the drive?
Thanks for any help you can provide. :doh: