Do you need to get IOS Images? Where can you get them from? I have a CD that came with my Cisco CCNA book. It has Router Simulations, but only for labs. I want a simulation where I can do whatever I want and just play around, not what the lab tells me.

If the images are copyrighted are there open source clones that aren't copyrighted by Cisco, but do the same thing and are legal?