Honestly, I don't think the dolphins will make the superbowl this year. I love the phins and all, but you have to be realistic. Culpepper probably won't start every game this year. Whether it be due to not being ready or having to take games off due to swelling. Plus the team will have to fully gel. Last year, Gus and the recievers weren't totally in sync until the end of the season. While Culpepper is a much much better quaterback than Gus, it is still realistic to expect some timing inconsistencies.
Also, almost our entire secondary will be new starters from last year, so they will have to gel as well. Don't be surprised if a few big plays are given up throught the year.
Bottom Line: I think this team will be much better than last year, and they will make the playoffs. But a superbowl win is still 1-2 years away.