Hi! We really appreciate your reply.But not sure what you mean by  "retreive it from the cd"we bought CFS and Battle for Midway,and Paciffic theatre,as by this message,you can tell we are pretty novice with computers.We happened to be searching for free download Fs games,and came across Simviation,we think it is a really great site,we really love WW2 flying games,we are not sure what you mean by retreiving it from the disc.We have downloaded a few missions,and a few planes.is there a way to retreive the default dp files without loosing our other installed downloads???iWould really appreciate aany help or comments on this.THANK YOU again. We really think that that is what happened,but not sure how!hope this is not too confusing!!TTFN             ??? ??? GNDD                   Again thank you very much for your reply,Its great to know there is a place to get help!!