How to check a new laptop

i have got a laptop dell e6400 from outlet
laptop is brand new and full box, but haven't seal (P/N 2y39z1s)

how to check laptop is brand new or refurbished?

i check some CD, DVD and i see some problem
P/N in dvd different P/N in cover (does it made by dell ?) (see picture 1)

i go to dell.com and check P/N of my laptop, i see the laptop have a mouse, and a cd windows xp sp3, but i haven't it when i buy laptop. (see picture 2)

The picture in catalogue "setup and features information" have problem

i want to ask something but my english not well

P.1

P2

P3