I cant get the castle skirmish working...Everytime i siege a castle, the message "program aborted, press anykey" appears.

And this message apears too, error:skirmish.csf
P/S: im mounting any cd-rom coz i dont have one. I downloaded the game from a site and the files are all in a folder.

Can anyone help me on this game please? I really wanted to play to this quite some time already. Thanks