Part of the 2012 NFL Draft order is set, which gives a general feel for where the Patriots will be selecting (link here).
Here are where the Patriots' picks are slotted at this time (subject to change based on playoff results):
First round (Saints selection, 29th)
First round (own selection, 30th/31st*)
Second round (Raiders selection, 17th**)
Second round (own selection)
Third round (own selection)
Fourth round (own selection)
* Could result in coin flip with the 49ers, as both teams have the same record and strength of schedule
** Raiders draft 18th in the first round, but as part of a seven-team cluster with 8-8 records, their position will rotate in ensuing rounds
The Patriots traded away selections in the fifth, sixth and seventh rounds.