QB D Garrard, D McNabb
WR L Fitzgerald, V Jackson, B Marshall, J Knox
RB S Jackson, P Thomas, J Stewart, R Menhendall, A Bradshaw
TE K Winslow, B Celek
Ya don't do it. If you start only one QB you hurt your team Romo don't have any more value than Mcnabb. Plus you downgrade at WR. Jackson is a hell of alot more consistent than Marshall or knox. Garrard is a fine back up.
I think you need to look into this a little more. Romo has a favorable playoff schedule and its only a matter of time before they get going. He has SD NO WAS where MCNABB has NYG SF DEN.