Import mx.collections.* with Flash CS4

Hi!

I am currently trying to make a chat client, by using the XIFF library that is said to be a Flash API. But really it seems as though it might be a Flex API, cause it’s importing the mx.collection.ArrayCollection.

And I don’t have Flex Builder, so I can’t use this code. So I wonder… Are there any way to Import the mx.collection.ArrayCollection into a Flash cs4 as3-document??

Cheers,
Artheus