[OnyxCougar]

I had step both's growing up, from the age of 9.

My first step mother tried to have me committed, and I nearly knocked the second one out cold in what would have been the world's fastest fist fight, had my father not arrived home just in time.

I have half sisters and ex-step-brothers and sisters.

This is the first time I've had step children (two daughters) and I haven't met them yet. (I get ta meet em the first week of April).

All you can do is love them and the most important thing is to treat them exactly like your own children. Discipline should be the same, from both you and your husband, for all the children. The rules are all the same. If the kids have different rules, it will cause a HUGE mess. Your advantage is that you have them when they are still pretty young. I anticipate the ugliness of the biomom becoming a problem at a later time, but the main thing is never to badmouth her, no matter how bad it gets. You can refute her, but don't belittle, or it's over.

Sounds like you have a handle on it, tho. I have a whole bunch of step sibling horror stories, but lets focus on the positive.