ok....i am looking at a used blackberry to replace my dying Curve..... what do i n eed to check to make sure its not stolen and can be turned on....? also, willl i be able to add my blackberry account to a phone that has previously been set up (pin#)

thanks for the help, and hope i worded this right

I would start here...

Buying a BlackBerry off eBay - BlackBerryFAQ