I think Lewis Hamilton will be feeling very comfortable now. He has qualified 4th, and should get better start than Trulli. Heikki might have been told to move over and block Alonso. That will help Hamilton gain 3rd or stay atleast 4th and prevent any attack from Alonso.
I think Ferrari's will get into 1st corner 1-2. Only person, Hamilton has to be careful is Trulli, Hamilton will have to make sure, he has jumped him. If he gets stuck behind him, then he might do some stupid mistake while trying to overtake.
I have read many articles here about how bad is Massa in wets and how good Hamilton is.
Let me tell, everyone, that Massa is ok if not good in rain. Did he make any mistake at Italy or Monaco (other than running wide at turn 1) or Spa when it started to rain. His problem at Silverstone was his car, which was unstable in rain. Everyone is relying on Hamilton's superior skills in wet, but Interlagos is place where anything can happen in rain. Even Michael Schumacher, aquaplaned and crashed in 2003. I remember one race where Alan Prost in his Williams was in comfortable lead and then came torrential rain. He aquaplaned going into 1st corner and ended his race in back of a backmarker.
So I dont think Hamilton will be praying for rain.