Are those lovelys not a perfect reason to take the good advice above? I don't have any magic words of wisdom but can say I have a 15 year old son. (Recently he has tried my pain pills for whatever reason)
I have always tried hard to make time for him (daily) so he can talk about what ever is on his mind. It only takes a few minutes and you both will feel better for that time. At the age yours are, I feel it is VERY inportant to do that. Maybe the little ones will even say "da da" first <img border="0" title="" alt="[Wink]" src="wink.gif" /> The ones that are older will be just as easy to give that time with and recieve the benefits from that.
The best of luck! and keep those picures updated