Can't see sub domian

[dhborchardt]

My local network is part of a domain that we want to separate into its own domain. For example we were part of Domain.org and now we will be part of Sub.Domain.org. When I try to login on the T42s, I don't see the sub domain as a choice nor am I able to manually type it in as the list is not editable. I can login to the laptop as Admin and change the PC to be a memeber of the new domain, no dice. I have removed networking and reinstalled but still can't do it. All other PCs and Laptops (other than IBMs) can log into the new domain. I am guessing it has something to do with the extra layer of security on these laptops.