Hi Homedad,
As Ken mentioned, I believe that the Toshiba HD-DVD player will output only 480i or p over component video cables because of the HDCP anti-piracy codes. If you use HDMI, then you can output 1080p or 720p if it's HDCP compliant.
My understanding is that no Blu-ray or HD-DVD players will output greater than 480 over component video because of the content protection. Hollywood lawyers don't want you making HD copies of their movies, hence the 480 restriction on component video outputs.
Regards,
