install dreamboxedit on your pc, and download all the dreambox files. then replace the satellites.xml file on your pc, and upload all files back to the dreambox. Your satellite should now be uploaded and ready to be used. Next, scan all transponders on this satellite, this will add all the radio/tv/data channels to the services. You should now be ready to watch any channel on that satellite. All you need to do now is update your user bouquets with the channels you want to watch.
Read the Idiot Guide posts about the Dreamboxedit program. AS JTA said, this will insert the files directly to where they should be. If you cannot find the satellite on your list in the dreambox, go to the satellite configuration menu and click on the "add" button until you have it. Another method would be to download a recent channel list. You can do this by pressing the blue button on the remote, most images such as Gemini have these built in, or you could download them from a website and then using the Dreambox edit, load them to your box.