M.,
I feel for you, I have two active kids who have had their share of sleep issues. I'll share what i've learned from them, maybe there's something you can use. At 10 and 7 both of my kids will usually go to bed without too many problems, so there is hope. In fact I think I can honestly say that both of my kids have on occasion actually put themselves to bed when they were too tired to wait for one of their parents to go through their usual bedtime reading routine. FWIW:
1. Warm baths can truly calm wild and cranky beasts at any time of day. Sometimes that is enough to calm them down (slow them down?!) enough to sleep.
2. When my kids haven't had enough sleep recently or have been over stimulated during the day they have a much harder time falling asleep.
3. When my son is very tired, he will actually get crazy active in order to stay awake. Recently he really surprised my by explaining this, "Mom, I'm just trying to stay away!"
4. Both of my kids sleep much better when they have had at least an HOUR of vigorous exercise during the day. More is better for my son.
5. The more TV they watch, the more trouble they have getting to sleep. The later in the day they've watched the worse it is. When my kids were younger, my husband could walk in the door in the evening and within a few minutes tell if we'd watched any TV during the day!
6. Both of my kids have gone through long periods of time when they listened to quiet books on tape while they were falling asleep.