I know we're going to have to put up with a few days of this, but I'm going to make a statement anyway, and it should get a sticky.
THERE IS NO DIFFERENCE BETWEEN THE ATT iPHONE AND THE VERIZON iPHONE EXCEPT FOR THE TYPE OF CELLULAR VOICE/DATA IT USES.
The only time you need to consider what carrier your iPhone is on, or tell us which one it is when asking for help, is if the issue is about cellular data/voice or issues with the carrier company. Problems with software (except in limited circumstances where an app needs to be updated for the CDMA baseband, such as GPS apps), both from the app store and bundled, problems with WiFi, and questions about features will almost always be the same across all iPhone 4 models. You can often search to find these answers, instead of worrying that the solution you found is "only for the ATT iPhone." It's the same
OP, just to clarify, I'm not trying to be mean or insult your intelligence, I just hope others will read this and realize this, and that it will make the lives of both those seeking help and those offering help on these forums easier. I can see why you would be confused if you haven't had any experience with the iPhone before.