I've just bought a Panasonic DMR-HWT150 to upgrade from DMR-HW120 (which couldn't run iPlayer). I copied all of the existing recordings onto an Ext HDD thinking i could copy them onto the new one but I've hit a problem. The new recorder will not see anything on the Ext Hdd unless it is registered. If I register the Ext Hdd it will wipe everything on the hard disk as part of the process. So how do I copy titles from the old recorder to the new one?