Just wondering if someone can give me a bit of guidance which is best to use to unlock my brand new iphone.

i have a infiity usb unlimited programmer and two silvercards to use. i'm not really sure what version of sim i have is approx 18 months old on an pay monthly o2 contract.

i basically want to know how i should unlock it to use all the functions including making calls and sending sms text messages. i really dont want to break it

I have read so many posts i think i'm now confused of what is the best way...

please can someone help me

Thanks alot