How to transfer account?

[Unregistered]

Possible to transfer account from 3GS to Iphone 4?

Thanks

[Unregistered]

Though I have backup everything in my iPhone 3GS prior to changing to iPhone 4. My account was gone and I have to restart afresh. Is there any way I can login as my previous account and continue from where I last stopped?

I tested on creating a new account using the previous account name, and was told that the name I chose has been taken. I assume the account still exist on the server, just that I have no way to choose to use it again. And help or advice is very much appreciated.
Thank you