TiVo AG0100 Wireless G USB Network Adapter for TiVo Series 2 and Series 3 DVRs
Worked like a charm!
I wish this little doohickey had been available the first time I set up my TiVo wirelessly!  I originally used a Linksys adapter and spent probably 4 hours trying to get it to work.  With the TiVo adapter you just plug it in and continue with the on screen set up.  The box recognizes the adapter immediately!<br /><br />Well worth the $50 price tag.