Picture subject ageing software, for special project :D

Hello everybody.

To make a long story short here i go. My wife just got pregnant (again) . To announce this to our respective parents, I want to take a picture of my 2 childrens and age them 2 (or so) more years. I'll then add the face of a baby to it and send that to our parents. I'll cut on the details, but you get the deal.

Anyway, I'm just wondering what free solution exist to do this. I use both Roxion Easy Media Creator 7.5 (on WXP) and 9 (Vista 64-bit) at home on my dual-boot PC. I don't think that option exist in those applications.

So, if anyones knows what I could use, or how to do it with Roxio, that'll be much appreciated. I got the news this morning and would like to do it this coming week-end to send it early next week. Adding the baby face won't be a problem, it's the ageing part that'll be.

Thanks for your time.