Spaz,
Can you post pictures of your AT&T Sim card? Also,
http://support.apple.com/kb/HT3406
When it says "If you no longer have the SIM that was used with the original iPhone, and the original iPhone displays the "Connect To iTunes" screen:
Contact your carrier to get a replacement SIM.
If you don't already have a wireless service account/tariff with that carrier, iTunes will help you create one. For more information, see this document.
Note: This article only applies to original iPhone."
If you get a replacement sim card, and put it in the iphone, won't it want you to activate with at&t? Also, will at&t give me a free sim card so I can update/restore with out running into the "Slide For Emergency" screen. I don't want to activate with at&t.
Also, if I get my iPhone replaced, can I stick the de-activated/unactivated sim card that was working with my defeatctive Original iphone and put it into my replacement Original iphone and be able to unbrick it?