Also review this from Cellunlocker.net - #1 Unlock Codes for Network Cell Phone Unlocking
USA Customers: If you are in the United States of America and own a phone that was purchased before January 26th, 2013 you may legally unlock it in accordance with the exemption to the Digital Millenium Copyright Act. (DMCA) Cell phone unlocking will now be illegal in The United States of America for any USA service provider cell phone that is purchased after January 26th, 2013 unless you have permission from the service provider your phone is locked to. We will not provide any advice, service, or support for any USA service provider cell phone or smart phone purchased after January 26th, 2013. Cellunlocker.net will not be held liable or responsible if you place an order for an unlock code or software for any USA service provider cell phone that was purchased after January 26th, 2013. If you make a purchase on Cellunlocker.net - #1 Unlock Codes for Network Cell Phone Unlocking or any affiliated website you accept full responsibility for complying with all local, national, and international laws. Cellunlocker.net will not knowingly give any advice or provide any service to anyone who wishes to unlock a phone that was purchased from a USA service provider after January 26th, 2013 in The United States of America.
Now I'm not a total expert on unlocking devices, but as KOLIO stated, do your research, talk with your provider
As for talk about unlocking here, lets be cool and not try to circumvent any legality for it.
I'm not saying we already are, just posting the disclaimer