You will have to connect it to your PC/Mac to activate it. When that has been done it'll allow you to access the menu.
no
No.
No
Yes, but only if you unlock you iphone
Yes, Yes you can.
You put a sim card in it.
any AT&T phone that can take that sort of sim card.
Put all your notes into an SD card
As long as it is AT&T, yes.
yes
If your 3GS is locked, you can't insert a SIM card.
You have to put a small tacking chip in the sim card and download an app on your 4s to track it