You're going to need some great waiver/FA pickups to make your team competitive. The SP isn't overly strong (though it's not a weak point either). The RP is very good for a H2H league. The offense is weaker than most teams in a 12 team league.
I'm not overly familiar with H2H leagues so someone else might be able to better advise you. I just want to throw out the idea of trying to move Lidge to upgrade the offense. You might even be able to get another closer + an offensive upgrade in return. Maybe a top tier 2B + a scrub closer for Lidge + Cantu. Just a thought.
Again, I'm not overly experienced with H2H leagues (or with Fantasy Baseball period to be honest)...but given the fact that you're in a H2H league I'd punt the saves and try for the 2B upgrade deal that I mentioned.
Other than that...maybe the same type of deal for a stud OF/1B stick. You could even try Lidge straight-up for a hitter. The spots that you're weakest are 2B and OF/Util. Might even want to consider a 2-1 deal to try and land a really good upgrade in the OF (deal Griffey, Dejesus or Bay + Lidge for a huge upgrade at the position).
There's not a lot to work with there though. You could also try to deal Gagne but I'm not sure how much value he has now...there's a lot of uncertainty about his status.