Xavier Nady should not be in your starting line-up until he starts hitting again. There is no reason why Jermaine Dye and Nomar are not playing in your line-up. Dye is a AL MVP Candidate and Nomar is the NL batting leader.
Personally, I would play Nomar over Cabrera at SS and try to move O-Cab maybe or at least put him on the bench for now. Nomar is too hot not to play.
Wily Mo I believe is still on the DL, so you would have to play Nady in the OF for now, which isnt too bad if he starts to hit, but its better than playing a guy on the DL.
I would definately look into upgrading at 2B, im not a Ty Wigginton fan and I dont believe he can continue to play well.