Code error???? - Nokia 7310 Cellular Phone

Pls. ulnocking my nokia t-mobile 5130c-2 IMEI 354224031365412

Here are some error messages or code error from nokia with some simple solutions to follow:http://www.nokia.co.uk/support/product-support/mail-for-exchange/how-to/troubleshooting/error-messages
or if your referring with unlocking codes: Hi you can use codes to unlock the mobile .to get the unlock codes visit here
http://www.unlocking4free.com/
Here they ask the following details before rendering the unlock codes they are
1. Mobile model
2. Country from where you brought the mobile
3. Provider to which the mobile is locked
4. Imei number of the mobile
Finally they will send you the unlock codes at free of cost.once
you entered the code in your mobile as for the instruction
given by them .your mobile get unlocked and it accepts any network sim
to get the IMEI: Unlock Your Samsung Sgh-t528g Mobile Phone Via IMEI. Your phones IMEI is your unique number that is given to each phone. For each IMEI there is a unique unlock code that once entered into your phone will enable you to use any compatible sim card. You can get theIMEI for your phone by entering*#06# into your Samsung Sgh-t528g keypad. You will only need 1 unlock code to enable you to use any sim card in your phone and enable it to be "network sim free".
you can also try going to this site:http://www.foneszone.co.uk/unlock_codes/Samsung/Sgh-t528g.php
though this site may not guarantee a free service:
or kindly specify the problem and I'm more than willing to help you out with your concern
just leave a comment if you have additional queries...
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Roger