AutoNumbers is a never ending topic of debate in most of the forums. I personally don't use Autonumbers as PK in any of my dbs unless the PK is not necessary for any other purpose or the table is not related to other.
Better to use a discriptive abbriviation of the main field as they have done in NorthwindDB
I am uncertain of the link ATM, I will look when I can. I poseted it just last week I believe. h I did miss where you stated that the DB was empty so i think it will reset to one. Older versions would reset the number while there was data in the table i am told.