After trying to put in security code it keeps saying error security code. what other code may i use to program my phone?

If you forgot you can generate master code using your IMEI, which can be viewed by pressing *#06# and keying that in the link mentioned below,,
http://www.unlockme.co.uk/master.php

or If you enter wrong password for more then 5 times,it ll ask you to enter the puk number....now call your customer care and
get the puk number...enter the puk number in the space given for password....thats it...problem is fixed
If you had locked your mobile then update the formware all saved passwords will be deleted.

I`ve included both as wasn`t100% on what you meant