You have a shot at the Division, sure. Everyone does. Now do you have a good shot? Yes. Also have a good shot. Do you have a better shot then the Jets and Bills, I would have to say Yes there too.
But unless the Pats are going somewhere, I wouldn't jump the gun. Granted you just added Culpepper. A Top 5 QB Pre-2005 season, who may or may not ever get back to that form. But the Pats still have Brady. A Top 2 QB, period.
So before you go on flaunting your new additions, still remember what you are up against. Granted the Pats have some losses, but as you can see from their 2004 SB win, they don't need stars to get it done.
This is still the Patriots division.