TiVo AG0100 Wireless G USB Network Adapter for TiVo Series 2 and Series 3 DVRs
This is GREAT!!!
This TIVO adapter is so simple to hook up.  I just plugged it in and Tivo recognized that I had attached it.  It allowed me to follow the steps and I was on my way.  Of course I had to have the necessary equipment prior for this to work.  And now I love it.  I no longer need the phone line.  Thanks Tivo and Amazon.