The Vikings HAVE to find help for McKinnie on Ware. He simply cannot block Ware one on one. The Vikings are going to have to find a way to chip Spencer too, because he has been every bit as dangerous, if not more dangerous than Ware the past 2 months.
On defense, the Vikings need their LBs to show up. Witten is Romo's security blanket and if he's left open in the middle of the field, he will gash any defense in the NFL and keep the chains moving. The Vikings need to stop the run as well. Nobody uses the play action fake better than Romo. He has really mastered fakes and misdirections of all kind. If the running game is working and he is allowed to use the PA to his advantage, the Vikings are in for a very long day.