HELP: unlocking Nokia 3650

[qianzhanginpdx]

Please help me unlock my Nokia 3650:

IMEI: 351102503441817
AT&T Wireless (31038?)

Some questions:

1. I have checked both sticky threads. I have noticed that my IMEI is: 351102 / 50 / 3 ... One of the sticky threads mentioned 351102 / 50 / 0 ... to 351102 / 50 / 2 ... for AT&T Wireless. Should I be concerned? I assume the network provider code should be 310-38. Am I right?

2. Can I have all seven codes? I was told I should use Code 7 to do master unlock. Is it true? I'm going to use my 3650 in many places in China, so it has to take multiple Chinese SIM cards and is going to be with multiple Chinese network providers too.

Thanks for your help.