What are you looking for your cracktro to contain, how long would need it to run for and when do you need it by?
I'm part way though coding one of two new cracktros for some other people at the moment. No promises but depending on the answers to the above, maybe I could help you guys out too...?
Or just do what jimmy2x2x (I'm gonna go get the papers, get the papers
) recommended and use the demo maker tool.