Here's what i think will happen:
1. Vettel (He excelled in the rain before, he can do it again whilst Massa and Hammy concentrate on eating each others flesh to put one another off)
2. Kubica (I think it would be great to see him overtake Massa in the Championship
3. Kovalainen (He needs some good finishes to secure his place at McLaren, and he has a fresh engine this weekend)
4. Hamilton (He'll mess up somewhere, but his wet weather skills will begin to tell when the rain comes down about 20 laps before the end when he's scheduled to stop
)
5. Raikkonnen (He'll qualify 1st, but then loose 4 places on teh start, giving 4 people penalties off the start too)
6. Alonso
7. Piquet
8. Massa (He sucks in the wet, saw it at Silverstone, he'll be as dizzy as a dodo on Drambui by the end of the day, but still nick a point with only 12 finishers)
Note: I want Hamilton to win, but it would be interesting to see a proper close fight between 3 of them, nice to see BMW looking like their old selves when it was a 3 way fight for the title