GQ, I'm going to challenge you a litte on that one. Given his current condition, going from zero to 7 days/week training and 2-3 days doing a second workout would be pretty severe.
In my opinion, the foundation of body fat loss is nutritional, rather than a matter of workouts.
I do believe that light daily cardio will be helpful, as well as 3 days of full-body workout per week. But more than that is an invitation for him to overtrain, become discouraged, and drop out.
Some nutritional links:http://en.wikipedia.org/wiki/Dietinghttp://www.iwanttolosefat.com/http://www.americanheart.orghttp://www.hsph.harvard.edu/nutritionsource/index.html
In reading these, you will see that even in relatively mainstream organizations there is still some variety of opinion as to what constitutes a healthy diet. But the basic principles are the same across the board:
* Smaller, frequent meals
* Avoidance of refined sugars
* Avoidance of high-cholesterol foods and trans-fats
* A balanced diet - that is, carbohydrates, proteins & fats - no radical "zero carb" or "zero fat" diets
* Plenty of water