Alot of people don't know this, but Beurlein is a very capable back up. This week will be a tough game with or without Plummer, but I don't see them losing games soley b/c of this injury. Steve will do enough just to keep the D honest for Portis to run successfully. Portis is one of the most consistent fantasy backs, so I wouldn't worry.
QB (1) - Plummer, Leftwich
RB (2) - Alexander, Dunn, Larry Johnson, Ronnie Brown, Stephen Davis
WR (3) - Randy Moss, Andre Johnson, Drew Bennett, Rod Smith, Jason Witten
K - Peterson
D - Carolina
(10 team league, pick #4)