Hi this is my first post on hackintosh so my iphone is coming tomorrow from apple and I want to unlock it using mtc gsm so is there any software or code can unlock the iphone I was waiting for this site www.iphonesimfree.com but I heard they have problems with at&t so is there any way guys.

Well, the only software method (free) is to wait and watch this forum. Besides AFAIK, iphonesimfree only do iphone unlock in bulk and will prolly be screwed by AT&T.
If you want, you could probably take the iphone to Hawalli and try to get it hardware unlocked, those are your only choices.