Negative list? My guess is what your trying to say is that the phone is blacklisted because it has been stolen or lost and that the legetimate owner called the phone company to put the ESN on a blacklist. This is highly illegal and immoral as you are trying to steal the property of someone else... Even if you paid good money for it.
In that case I don't think anyone here on XDA will be helping you. It's not because we are unlocking phones here and by this way we violate the terms of the limited warranty of mobile phone opperators that we all steal and pirate stuff. We merely enhance the functionnality of our phones. If you found the phone or stole it you should bring it back to it's belonging carrier in a store.
Anyway if this is not the case you should know that even if both the phones are your legal property(Then I apologize for the little morality speech... Please ignore it.), this is still an illegal procedure you are undertaking. I really doubt you will find active help in this thread, moreover this has been discussed many times in other threads. Have you search?
Good luck anyway in getting a working phone!