You've gotten some good advice so far - maybe you could take LosingIt's suggestiong & do the 3 day diet for a kick start, then follow Lindarella's advice for long term weight loss?
One thing I'd like to point out is this: In my experience, the slower you lose weight, the easier it is to keep it off... and the faster you lose weight, the harder it is to keep it off. Maybe that's not true for everyone, but I know for a fact that it's true for me. That's why I've gone back to counting calories during the week & taking weekends off. It works well for me, and I usually lose 1-2 pounds per week this way.
I used this method to drop 28 pounds several years ago. I kept it off (without even trying!) for 3 years, until my dad died & I went on a months-long binge & gained 20 pounds. But now I'm following my calorie plan again, and have lost 10 so far.
Different methods work for different people, but I strongly believe that you're better off losing the weight slowly.
Hope this helps. Good luck!
"If there are no [mastiffs] in Heaven, then when I die I want to go where they went."
- Will Rogers