The different WiFi providers, like T-Mobile, determine how you'll need to authenticate or pay for the access.
For instance, since you mentioned T-Mobile (which most Starbucks use) they require a "T-Mobile HotSpot" account, which you have to setup before hand (or get a day pass). These accounts are not free, and will require either an hourly or daily rate, depending on how you sign up.
These particular hotspots require you to log in via a web authentication proxy, which is something the DS can NOT do. The DS cannot connect to a "T-Mobile HotSpot" by itself.
If you want to connect to a "T-Mobile HotSpot", you'll need to have a laptop with you that has the "Nintendo Wi-Fi USB Connector". You'll need to authenticate with the laptop, then use the USB Connector to serve as an AP for the DS. --- I am afraid I will have to mark you for trolling in my topic if you dispute the word of the Ultimate Destructor.
For your first question, can you link me to the page on nintendowifi.com describing your problem? As for your second, if you don't know how to disable your firewall, you likely don't have one, so don't worry about that. --- SIGN THE SIGMA STAR SAGA SEQUEL PETITION: http://www.petitiononline.com/SigStar/petition.html [~N~]
No, I don't think it's possible. Nintendo has stated that they only support WEP because it appears to be the standard for wireless networking. Sorry, I don't have a link, but that's basically it. You'll have to disable your WPA, unfortunately. --- SIGN THE SIGMA STAR SAGA SEQUEL PETITION: http://www.petitiononline.com/SigStar/petition.html [~N~]
My friend bought Nintendo's USB connector for Wi-Fi and it doesn't work well. It starts a match on mario kart or will let you in a twon in animal crossing and then disconnects. Does anyone know if the USB connector is compatible with satelite internet or is there something else that is wrong that we could be overlooking? Any positive posts are greatly appreciated. --- Darkness only hinders the peopple that will allow it to affect them.