Actually, DP was stopped a few years ago. I have run DP on both 2000 and XP. I had some problems with the modems not working, but a direct connection was fine. A manual download also worked. I had some trouble starting the application using the shortcut that is placed on the desktop. It will start DP, but it immediatly closes. I found that if I select Start, Run, Octel, Decision Pro it would start up ok.
Good Luck