Hmmmm...Not quite.

Since you don't have a file beginning with '0', but instead '1', you must increment every random number by 1.

Here's the code you should use (replace # with the number of different files you have):

Set Variable: "i" = Random (#)+1
Load Movie ("bg"&i&".swf",1)

I used this for 9 different random backgrounds for my new site: http://torraywallace.com

If you cannot get to it that's because the Apache server will be down for a while. The site is under construction...