Thanks, FSJaeger, I did it and it worked. I did post at the RoF site but got no answer there.
By the way, if you install an older CD version of the game and then update you may get error 10032 during gameplay. Solution: go to RoF data/iParser and give each file full reading, and writing etc. authorization (by right-clicking on each file and then going to properties, security). Take care: identify as user, not as administrator.