1) and 2) You should have been deleting the messages every week or two. There's no way to fix the problem now - you'll need to do a Clear and Delete.
3) The R10 is not compatable with the Tivo Wireless adapter, or any USB to wired or wireless adapter as DirecTV's software disabled the port. The only way to enable the USB port is to solder a reprogrammed PROM on the motherboard, hack your hard drive in a PC running some Linux based programs and then reinstalling the Tivo hard drive.
Since this is a DirecTV Tivo - this message really belongs DirecTivo forum
3) The R10 is not compatable with the Tivo Wireless adapter, or any USB to wired or wireless adapter as DirecTV's software disabled the port. The only way to enable the USB port is to solder a reprogrammed PROM on the motherboard, hack your hard drive in a PC running some Linux based programs and then reinstalling the Tivo hard drive.
Since this is a DirecTV Tivo - this message really belongs DirecTivo forum