1. There isn't an unlock code for this phone. It requires a cable to unlock and the software.
2. It's such a low end phone, it's not worth it.
Is there a reason you need this unlocked? I own a c1300, which is basically the same (according to phonescoop.com), and there isn't one good reason I've found to unlock it. In my case, if I'm leaving Cingular and want to take it with, there are numerous free phones that are better.