Root After rooting my Sonic, how to unlock it using administrator access??

[klsdream]

Hello guys,,

I have root my sonic by this thread [ROM] CyanogenMod 7.2&##ZaD!!RoM V 1.5Huawei U8650 Sonic.

with CyanogenMod 7.2, the phone is working perfectly.

So now i need to unlock my phone so i can use another sim card.
How can i do that please??