There is no preview listed for that safecracker, sorry. Yes, it is possible to change the numbers, but you'd have to save it as a PPT file (instead of a PPT show file) and then you'd have to change the links for each combination at the bottom. If you aren't too familiar with adding/changing links on PPT, it might be a little tricky for you. Let me know if there is anything else I can do to help. Thanks.