I still have my original Talonsoft CD; I really don't want to have to buy this game for a third time!

I cannot seem to find the installer or the original download file. What is it called? Hopefully I have not deleted it.[:(]

Hi; I have exactly the same problem, well I had to reinstall Vista and I installed it on a different hard drive; now I have not touched the files or moved them on my old hard drive but I cannot load any scenarios and get the Error 486. How can I reproduce my registry? What does that mean?