HELP! I need to bypass unlnown User Lock!!

I"m an "old School" Cell phone guy with a small repair and refurbish shop. I had a customer come in who's young daughter was fooling around with her phone and put a new user lock in it. I've already tried all the obvious ones(last four of her #, 1111,1234,0000,etc) and none of them work. I've already verified with VZW it is actually hers. Any suggestions? I cant get CDMA WS to get past the read function(I have 5.5 pro version, will updated version do this?) and had heard Bitpim can get into file system, but I don't know where to go to fuind this. Can anyone help me! Thanx in advance!!!