If you are already looking to FAs in 07, look at Zito and Schmidt too.
I am not totally sure Schmidt is a FA, but I keep hearing his name in trade talks, which would inidcate to me he might be, and of the 3 (Carpenter, Zito and Schmidt) I would take Schmidt.
But look for us to also have some more "kids" ready by 07, depending on how much youth the team wants to add: (pitchers) Hirsh, Buchholz, Wandy, Nieve, (batters) Pence, Jimerson, Scott, Zobrist, House, Gimenez, Conrad.
Based on how some of these guys have looked this year, I would say the team still needs to address batting in the FA market and bullpen, more than starting pitching, but you can never have enough starting pitching, IMO.