i won't speak to the needs of other teams, but as for the Cowboys:
1. Adams should be back at LT, but its the Center position that worries me most. Having said that, i would simply draft the highest rated OL regardless of position, then shuffle accordingly.
2. I believe our secondary is solid - its the lack of pressure up front that is killing us. OLB is my second draft pick - a guy who can rush the passer and has good coverage skills.
3. Everything depends on the OL, both generating holes to run thru and protecting the QB. Bledsoe has shown that with decent time, he can get the job done, and Jones and Barber are both starting-grade RBs. My third pick is another OL. Tucker is done, and Gurode and Peterman as well. We can't afford another FA OL, so I would draft another OL with the third pick.
EDIT: I believe Romo can handle the backup QB position, if he is ever given the chance. I don't see the need for another QB to be brought in. Henson should continue to develop - i wouldn't give up on him until after next year.