Random instances

Hey all, iam finally going to try to make my footer playable!!
lol, what i need to know, is how to make create random instances of the objects falling (as seen on footer) , so i need to figure out how to create random instances and random times in which they fall. any help will be great, and if you know of any other things i would need to know to achieve to make this game , plz tell,
thanx

Look at the falling snow tutorial, it might help :phil: