Hi & Welcome to 3FC =)
If you're interested in the Dukan Diet you might be able to chat with others following the plan under Diet Central!
The only "required" amount of exercise you need for losing weight is "do a little more". If you have trouble beginning a workout routine, then do things that are going to add in activity in small, but permanent ways. Train yourself to park further from stores, to take the stairs instead of the elevator, to take a stroll around the office building before going inside. Start small, make it a habit, you can build up when it gets to be routine.
If you want other exercise tips there's an Exercise area of the forums!
Best of wishes!