Maybe you have been at a Hotel with your Laptop, and tried to access the free wifi - and you are presented with a Disclaimer page, and asked to click 'continue'. This is called a 'Captive Portal'. Currently, there is no way for the DS to connect to networks that use the Captive Portal software. If you try, your DS will find the service, but will be unable to successfully complete a connection to the NDS network. But, with the new Opera browser coming out, maybe we can first gain access with Opera, and once our MAC address is approved, switch it out and put in our game, and then we would be able to connect. I have not done the research, but I pretty sure this is how captive portals work, because with a Laptop, once you have moved passed the disclaimer page, you can continue to access the network for the next few days, without ever seeing that page again. I think this is because your MAC address is temporarly added to the 'approved' list for a time. I read at the official Nintendo forums, that you can actually ask the person who runs the Hotels servers, to add your MAC address manually, to allow you to connect with your DS. I really hope with the release of Opera, that we can now connect to the growing number of networks using Captive Portal software. This past weekend, I stayed for a few days at a Holiday Inn Express. There was free wifi right in my room - nice strong signal. But, was unable to use it with my DS because of this very problem. (Confirmed they were using Captive Portal software by using a laptop). Sure, I could have went out and purchased the Nintendo Wifi USB adapter, and connected it to the laptop, but I have no need for it at home so couldn't justify the cost. Any thoughts?