Trinity - I'd start by thinking about what you want and how you work best in regards to times of day.
I'd be looking at these 5 priorities:
1 - hygenic kitchen
15-30 minutes to do washing up and wipe down the counters (2 lots of 15 or 30 mins at the end /start of the day)
2 - hygenic bathroom
5 minute wipe round. Get some of those disposable wipes, then you can just wipe down your surfaces and finish off with the loo before you chuck it
3 - clean clothes
One load of washing - washed, dried and put away
4 - clean bodies
shower or wash for you and kids
5 - full tummies (with good food)
just make sure, to start with, that they AND YOU get one good meal a day, whether that's a balanced packed lunch or a nutritious dinner and don't worry if the other meals are lazy for a while longer.
Then I'd figure out when your best time of day is - is it first thing, after the school run, lunchtime, after the kids are in bed? Pick when you're generally most motivated and make it your housework time.
Also, is it important for you to go to bed / get out of bed to a tidy house, or for the kids to come home to a clean environment?
I'd definitely agree with involving the kids according to their ages and abilities. My DS (2.4) loves cleaning - he sweeps up his dropped food with his little dustpan and brush and when I hoover he follows me round with the cheap carpet sweeper from argos He'll also help with the dishwasher when he's in the mood, or the washing up when I'm in the mood to deal with all the water
Also, I find lists very helpful - the feeling of satisfaction when I cross everything off by the end of the day makes me feel like I have achieved something. I recently split with my H and although we're getting on well at the moment, throwing myself into improving my house and getting myself into a good routine helped me not to go crazy!
And I'm on the fledgling fliers thread and don't really manage to keep up with the chat, but people don't seem to mind