Hi, I just wanted to post this in hopes that others find this useful. I have purchased the "official" Wireless G adapter for my new Series2 DT Tivo because it supported WPA PSK with TKIP. The first thing I found out is that the version of Tivo system software has to be version 8.1 or above. For new Tivo purchasers, your Tivo may come out of the box with an older version. Find out under: Messages & Settings -> Account & System Information -> System Information : Software Version (third from the top). Of course, the catch is that you can't until find this out until you have finished set-up. So, if possible, try to start with an ethernet cable connection or at worst case, have the phone connection inserted as well. The good news is that Tivo will update itself with the newer version after about the 4th time you "connect to the Tivo service". Below is what happened each time I connected: 1 after zipcode to get cable carrier information 2 get today's information 3 get the next 2 weeks of information 4 get the new version of software Once you have the latest version of software, insert the Wireless G adapter's USB into the Tivo. Now the key bit of information I found is that when I went to enter my SSID (because I do not broadcast it) you need to select the "TOP" option for "Enter network name" and NOT the second line called "Create New Network". This consfused me because I thought the top line was the "confirmation" of one of the shown SSIDs at the left, but it is NOT. If you highlight and select the "Enter network name" at the top right of the screen you should be given a choice between WEP, WPA, WPA2. After you select WPA, you will then be asked if you want AES or TKIP. Selecting TKIP takes you to a box to enter your keycode that you originally configured on your router/gateway. On the other hand, if you select "Create New Network", you will only be asked for a WEP key. The Create New Network seems to be for a peer to peer config which I do not know about. I hope this helps, because I could not find the above information in one place and I wasted a couple of hours figuring out how it works.