Transferring everything from old to new iphone?

My iphone 4 was stolen, but i still have an old iphone 3.normally when you buy a brand new iphone, i know that when you connect it to your computer it automatically puts everything from your old iphone on your new one (contacts, pictures etc.)
But the one i want to use now has a lot of old stuff on it, its basically not "empty". When i plug it into the computer i don't see the option to put everything from my old phone on the new one. How can i do this?

You can transfer all things from old iPhone to computer, and then you can transfer them to new iPhone. You may check out this tutorial that helped me before
http://my-media-tools.posterous.com/ipadiphoneipod-transfer-tools

For transferring your contacts you can follow this guide. Easy to use and saved my iPhones address book. http://www.instructables.com/id/How-to-export-contacts-from-iPhone-to-PC-Outlook/#step1

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