Help my falling snow to FALL

I have tried this tutorial at: http://www.kirupa.com/developer/mx/snow.htm. I'm using Flash CS4 on the MAC.

But when I run it, nothing happens, and I was wondering if someone could help me with solving the problem because I'm new to ActionScript 3.0.

When I run the test movie I get an error:

1087: Syntax error: extra characters found after end of program. OnClipEvent (load) {

Also, it doesn't say in the tutorial, so I created a new layer first and then dragged the snowflake symbol onto the stage and then added the script to it. (now there are 2 layers on my timeline). Although it doesn't say to make a new (2nd) layer. Surely you can't do everything on the same layer, because you need to add 2 different scripts which you can't do to one layer.

Is there anything else I can provide so someone can help better?

Thanking you in advance for your help.