Help with Falling Snow for Flash CS4/AS3

Hi there

I did the excellent tutorial on Falling Snow for Flash CS4/AS3 on this website.

I now want to add further graphics and animations to the snow for an e-card I’m creating.

I have tried to add to the timeline and animate a logo, but then the snow just flashes on and off in one piece.

Is there a way I can make the snow fall, say, halfway through my animation so I can add other things to it?

Any help would be great. Thanks so much.

Trillian66