Help me unlock my 7210

[Miastt]

Please please please can someone help me out with some ideas on how to unlock my 7210.

It is brand new, and so I guess a recent version. I have already blocked it trying to enter unlock codes from various sites on the net.

I am no techno genius, so if it can be kept simple I would appreciate it.

I have a cable to allow me to connect the phone to my PC, but am just in need of the info on how to use it properly!!

[Gee]

How many times did you enter the codes? If its more than 5 times you will need to unlock using cable and relevent software it might be cheaper for you if you found a person that can unlock using cable in your area. Also you have posted in the wrong section