For those of you who want to activate an iPhone without using iTunes so you can use a non-iPhone AT&T SIM, you can now do this without doing a bit of command-line or accessing the terminal.
iActivator is here and it basically is a program that doesn't require you to open the terminal at all. Be warned though... this is still "beta-ish" software and if you're afraid of "bricking" your iPhone, better not to do it.
