Me too. I happened to have a newer (Humax) remote and I am using it with my new Samsung TV and my old DirecTiVo. Apparently the newer remotes work with new Samsung codes 305 or 306.
Series 3 TiVo - OTA only now for conflicts
TivoHD - retired
300 Hour Humax DRT800 - retired
140 Hour TiVo SA Series 2