The premise is simple: I'll tell you what players you can confidently start the season with, and what players should cause your stomach to wobble if you have to start them.
2006 stats at NFL.com and pro-football-reference.com
Defense: The Baltimore Defense is the #1 fantasy defense: they've maintained their dominance over the past seven seasons better than Chicago has, they were better in 2006, and it's only Devin Hester on special teams that makes Chicago possibly better (but are special team TDs really very predictable?).
Robbie Gould (K): Jiminy Jillikers, Radioactive Man, Robbie Gould scored a lot of points last season!
Cedric Benson (RB): He should now be expected to get feature back carries. Somebody is going to have to suck on the sword and start Benson--if you're strong at other positions, it may as well be you. He could really perform well. Or he could do nothing at all, who knows?
Desmond Clark would be one of the valid fantasy TEs, if Chicago hadn't drafted TE Greg Olson in the first round this season. I'd still expect Clark to get most of the catches, but the threat of Olson taking playing time and end zone targets scares me off Clark. Muhsin Muhammed and Bernard Berrian are WRs that can be on your roster in a deep league. If you start them, buy a pack of breath mints, because breath mints will make your mouth feel fresh after you've just vomited.
If you enjoy horror movies and roller coasters, and don't really care if you win or lose at fantasy football, you should also start Rex Grossman.