Restriction codes

[Thinking Beyond]

Hello,
Can anyone help me,
I just got a 3510 from a friend, and i am trying to use my UK Orange simcard on it but. it asks me for a restriction code.
Does anyone know what this code is, or know anything that can help me.

Thanks
Alex

[Dydol]

If U will know for which network this phone was locked post it here with imei number (*#06# to get it) and it will be unlocked