I will do a  writeup soon on my experience buying the new iPhone 3G, but for now I wanted to share the fix for any new iPhone users who have tried to access the iTunes store / iPhone applications area to install new programs on their iPhone, only  to be plagued by a certain error:

The email address myapplestore@mac.com has been registered to your iPhone.

This error occurs during the in-store activation if the person activating your iPhone went the “extra mile” of service.  Unfortunately,  it also activates your iPhone with the apple store’s username and password.

You can tell if your new iPhone is doing this by opening up the application store, searching for an application, and trying to install it on your iPhone.  If the email address under ACCOUNT sales myapplestore@mac.com  – then yep, you need to do one more small step before you can access the store.

SOLUTION:

You need to sync at least one playlist or content from your computer/iTunes account to your iPhone.

You will then be asked to register the computer with the phone, which you will click on Yes, and the phone will sync and then magically have your email address plugged into it instead of myapplestore@mac.com.

While some people might sync as soon as they get it, I wanted to install apps as soon as I could, which was my problem.

so there you have it – that is the easiest and fasted way to solve the iPhone application store myapplestore@mac.com issue.