would this really work to unlock 3g iphone?

[LMd]

I found these sites on the web, i have the new iphone 3g and i need to use it with other carrier (not at&t). Thanks

http://iphoneunlock3g.net/
http://www.unlocksiphone.com/index.html

http://www.unlock-the-iphone.com/members/login.php

[jocoolguy]

I haven't used these sites to Unlock I-phone 3G..I have unlocked my I-phone 3g easily using the remote unlock service from Onlinegsmunlock.com
they provided me best service and good support.