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The are many many listing selling so call New Version Nokia Unlocking Software for 99p, which cliams will unlock about 70% of new Nokia BB5 phone (i.e. N73, N70, N92 etc, basicly all new smart phone). The turth is you always fall into the 30% why because there is easy resolution for this new BB5 yet.
Now most operator (network) will sell the unlocking code to your for a fee about £20, this code is directly from Nokia the operator can not even generate the code themselve.
So if you already try one of these 'unlocking softwares' to generate the code for your phone and enter INCORRECT code for 5 times, there will be not much you can do about it. There is a device which can reset the counter in the phone but poeple who has it normally will change you about £40 to reset it, why? cos there is really nothing can be done if enter 5 times wrong code, even rewriting (flashing) your phone software will not help.
So remeber if the softawe is real it will not be 99p, it is very like it be something around £50,000 to £100,000, cos I know people will be willing to pay these sort of money for his warehouse of BB5 phone.