The problem here is that Prancer is not public domain and not owned by DIYLA. It was and is owned by its developer and what you are asking is for this site and its members to help you steal it. That is not cool. If you can get a hold of Cass and he is willing to give it to you then great, I would be interested in seeing it start up again myself.
I must confess that was my "if all else fails" plan (even though I don't know how to reverse engineer software) but I was also hoping that he would have left some contact information in his software as all good developers do.
I am trying to contact Cas through here and other sites as well as people but of course, it is slow.
If anyone actually has the software but doesn't trust me please search it for any kind of contact information. It may be in a Help->About menu or you may have to look at the properties of some files or look in .ini, .info, .txt, or others.