It is fairly straightforward. You'll need to put your old SIM in the new iPhone and connect it to iTunes. The iTunes activation prompts will ask to verify your phone number, billing zip code and last 4 digits of your SSN. After this, it will prompt you to re-select your data and text messaging plans and lastly ask for your iTunes Account information. Once this is done, iTunes will ask if you would like to restore your new iPhone with the backup it last created with your old phone. This will then copy all your settings, wallpaper, text messages and notes back over.
^^ yep. Just swapping sims wont activate a new phone. You have to activate the new one through iTunes by verifing your social and zip code. And God forbid you are using the 1st iPhone on a prepaid plan the iTunes re- activation wont work at all.
Thanks for the help. I will bring my laptop with me so I can do it there.
I'll have to hide it though; its a windows laptop. It was a suprise pressent so I didn't have the choice. People might think I'm one of them PC people if they see it. I could go home and activate it on the mac, but I'm to lazy.