unlocking motorola V on optus network?

i have a motorola Vsomething and want to give it to my mum as i have just got a new cool phone... how do i go about unlocking it so she can use it on another network... was a prepaid mobile

Hi you can easily unlock your Motorola phone from optus network provider using codes ..You can purchase code from online providers like TheUnlockArena.com for reliable cost .You first check that whether the code is available for your mobile mode ,country and network provider .If yes then pay for it and unlock the phone then freely use it with any GSM sim ...