CD image if you have a stand-alone-TiVo or previously tivoflashed DTiVo:
nic_cd_20050218.iso

CD image if you have a DTivo that has not been tivoflashed before:
nic_cd_tivoflash_20050218.iso

CD image if you have installed an LBA48 kernel on your TiVo:
nic_cd_lba48_20050218.iso

Driver only pc install:
nic_install_pc_20050218.zip

Driver only native install:
nic_install_tivo_20050218.zip