mobile

My fiance has a Galaxy Note II that was registered with either Telus or Bell (our friend let him borrow the phone until he can get his own) and our network is with Wind Mobile. I looked up on whether or not it's compatible and supposedly it should be but there has to be some "adjustments" on the phone. One website mentioned Odin and QPST but we don't know exactly how to use those programs to change the network to AWS. Is there anything else we can use or do that is much simpler or at least simple enough to understand with proper instructions, preferably one that doesn't brick the phone, unless specifically detailed about how to unbrick the phone, because again, the phone belongs to a friend of ours and we are giving it back to her when he gets a new phone. Thanks!