That adapter is a wireless-B and will not work on a Series 3, only the Tivo brand adapters will work. The Dlink, I have used it on a Series 2 and does not support WPA security.
Original S1 (Recycle Heaven)
Series 2 (PLS, sold)
TiVo HD 1TB (157 HD Hrs, PLS, "652")
Juliet Basic (4XL, PLS)
The TiVo Apocalypse begins on Sat 2013 Feb 16 00:00 GMT!