Tank Johnson was a flop so they will look to improve the defensive line and find a new sheriff in town with either Everette Brown the defensive end from Florida State or Evander Hood (DT) from Missouri. Brown who recorded 13.5 sacks last year, plays with intensity, and ran under a 4.7, although he could be an earlier pick he may fall into the Cowboys' laps due to his lack of size, 6’2” (270 lbs). Hood could also fill an interior need for the Cowboys, he has decent speed and size for a DT (6’3” 300lbs) so he could be a good pick up in the second round.
The 69th pick also goes to the Cowboys who could grab a WR to compliment Roy Williams (WR) or a safety to fill the void from the loss of SS Roy Williams. Louis Murphy, WR from Florida, could give the receiving core a boost. Although Murphy has great speed and size he was in the shadow of Percy Harvin at Florida, but could surprise. Patrick Chung could also be a great pick-up; the SS from Oregon has good size and speed, and was a tackle machine for the Ducks averaging almost 100 tackles a year in college including a 117 tackle season in 2007.
With the 101st pick I would personally enjoy seeing the Cowboys go with a wildcard pick and take Connor Brown from Cincinnati. Connor is a very athletic player who was named both All-Big East Tight End (2007) and All-Big East DE (2008). Connor also ran a 4.6 40, has good size, and can block.