4 ignore negative reviewjordh1 | 04/02/2009 | See all jordh1's reviews (1)Firstly, the wireless adapter will need to be compatible with the router that you are using so please do check before purchasing. Secondly, you can use this in conjunction with your existing wireless network and it designed with that in mind. (It says this on the official Nintendo website so please ignore comments in the review below (again!) this is not what it is for. It is.) This is so you do not have to change your existing security settings. I believe the DS will only work with WEP security settings so people with WPA settings will have to either change them or buy this. I would advise that if you don't know how to change your wireless security settings, (which can be fiddly) or if you want to keep a more secure network (WPA is more secure than WEP), buying one of these is the way forward. I have my house fully connected wirelessly with PC, laptop, wii, Xbox360 and with this, I now have the DS! Without this, I could not have the DS connected as I will not downgrade security to WEP. I would recommend it.