For the first five weeks:
Diet: do Lyle McDonald's "Rapid Fat Loss" diet. This is extremely low calories, low carbs, and has a very specific protocol to follow. Read the book; meanwhile tell me your height, weight, and approximate bodyfat and I'll set it up for you.
Training: Lift weights twice a week, basic full body workout, 3x8 squats, deads, bench, rows, chins, cleans or millies. That's it, and no, I'm not kidding.
Cardio: walk an hour or more daily. Or ride a bike at a modest intensity (something that feels like walking). Or any combination you can stand.
For peak-week:
Dr. Joe's a good resource:
Bodybuilding.com - Peak Week: It Has To Be Perfect! - Joe Klemczewski
So is Christian Thibaudeau - here's an article he wrote with another great resource, Chris Shugart:
Shredded In 6 Days by Christian Thibaudeau and Chris Shugart | Enhanced Fitness and Performance
The second article has a decent setup. Read both of them and let me know what help you need setting it up.