Hi there Sean
Welcome to the world of model aircraft and FMS. I don't know of any way to convert to x files from the software that you are using, you would be better to use MetasequoiaLE. You can download it from here
download the MetasequoiaLE R2.3b-2 version there are many tutorials on the net about using this program you could start here
Another member of this forum Gary Gunnerson also has a good web site that has a list of tutorials that can be found on the web
Have fun and any questions just ask
Regards Chris