Hi Kate,
just wanted to send and I hope thing improve soon. You are doing such a great job with your children. I definately agree that you need to try and find some sort of compromise between your and DH's parenting styles. I think that children's diets play a huge role in childrens behaviour, so all that junk food is not really helping the situation. Similarly with the Wii and T.V. would not be helping their attention spans and bedtime routine e.t.c. This is a really tough situation, I know it can be really hard when parenting styles differ between parents. I hope you find some way to make things work a bit better.