Kathy, the easiest way to deal with your problem is to open My Computer, find your media files and copy and paste to the external drive. this will leave room for new files.  Your files may be pictures, music and other items.  These can all be transfered to the external hard drive.  Before you transfer, create  new folders on the external drive called Media Files or Music, pictures, etc., and paste everything you want transfered into it.  This will give you a lot of room on your internal drive.  If your copied files are satisfactory, you may now delete them from the internal hard drive.  As your internal drive again fills up, you may repeat this process.

Thanks you for your quick reply. I didn't think of that. But is there a way to direct it to my external drive. My media center is deleting tv shows now during the night. Last night I had recorded 4 shows. And today there is only one. Can you tell me why this has happened. The space was not that full. I have had that number of shows waiting to be watched before.

Thanks.

Kathb, transferring files from the media center to an external drive is not an option offered in Media Center settings.  You may have a setting available in the external drive to automatically copy media files, but these will be duplicates. I do not recommend  changing computer settings in your registry to move downloads automatically to the external hard drive.  You can, however, partition the hard drives,and direct new data to a designated partion.  All of these options are complex and I do not think you should consider them.  In answer to your other issue, it is possible that your selected recording downloads were not selected properly or were too large for the available space.