given what you've posted in the other post, i can see WHY you want to have him sign over his parental rights, but having recently witnessed SIL's brother going through a similar process to try and stop his ex from getting to his children (for reasons that are on par with yours) i can say it's pretty much impossible. the courts will ALWAYS do what is in the best interests of the CHILD - now, for the time being, that might be to keep him away from your DD - but in years to come, he may decide he wants to be around her, and might jump through all the hoops the courts put there so that he can have that right. as much as it isn't what you want, it might be what your daughter wants as an older child/teenager.

what i would suggest, at this stage, contact the Family Relationships Advice Line - they're a referral service set up by the attorney general, and can point you in the right direction to get sound legal advice for YOUR circumstances....