Kel- Have you been to see your GP? I went to see mine, and it was something she said that finally kicked my butt into action, and it was long the same lines as what you said. She told me that even with the best intentions, and doing all the right things for your kids, they are going to do what you do and not what you say. That was enough for me to realise I never ever want my children to go through what I have been through with my struggle with weight.
Also I dont know if it is the same in all states, by my GP was put me on some sort of medical plan that entitled me to 5 visits to the dietician and I think each visit cost me about $2 out of pocket, I had to pay up front but was then able to claim it back from medicare, and it is meant for people who have a BMI which classes them in the obese category.
As for excercise, borrow an aerobics DVD from the library or buy a skipping rope, nice and cheap and stuff you can do at home. I have resigned myself to the fact that I need to be out of the hosue for my excercise by 6am or it isnt going to happen, so I set out my clothes the night before and second my alarm goes off I get up, get dressed and get out hte house before I have a chance to change my mind. I like the early mornings as it gives me a chance to put in my head phones and have a bit of me time, while DH and the kids are still sleeping.

As for treats etc, I just dont buy junk to have in the house, if it isnt here I can't eat it. I try and make asmuch of the snack for my kids from scratch as we need them, so I dont have tempting things sitting around in the house.

Like some of the others have said, I am a long way from my goal, but this time I have decided that failing is not an option, it is not ok for me to continue along the way I have been and mostly I have decided that I can actualley achieve what I have set out to achieve because I believe in me.

Good luck with it all, and remember you may only loose a couple of kilos in a month or 10 kilos in a year, but by doing nothing those months or that year is going to pass by anyway and you will still be the same weight and you will still be unhappy with yourself.