TiVo Community Forum Archive 1 (http://archive.tivocommunity.com/tivo-vb/index.php)
- TiVo Underground (http://archive.tivocommunity.com/tivo-vb/forumdisplay.php?forumid=8)
-- TurboNET not functioning. (http://archive.tivocommunity.com/tivo-vb/showthread.php?threadid=106034)

2 things I would check,

1 - make sure the connections are on BEFORE powering up TiVo. DHCP request only comes during the boot process, so if tivo did not get an IP during boot up, it will not get one untill next reboot.

2 - make sure TiVo software is 3.x+ . If not, you MUST run the install script for turbonet. Only in 3.0 they added support for the TurboNet and dial out string out of the box.

-H