Airport Express to create a wireless LAN without internet?
First off, it's an international mathematics competition that they'll be going to, and that being the case, the internet will be shut off for possible stretches of 3-4 days for security reasons. As Airsharing HD seems to be the most convenient non-jailbreak method of sharing files on the iPad, my question is, does anyone know if an Airport Express is capable of creating a local area network without any internet-sourced IP addresses, allowing his iPad (Airsharing in particular) to interact with other Macs / PCs through a single network? If AE can't generate IP addresses for devices that connect to it, does anyone have an idea if the Airport Express can be used to wirelessly extend a switch / hub? The venue will likely have no active wireless networks, nor can I assume that internet cafes will be accessible to them.
Assuming that the venue has no internet connectivity at all, file-sharing seems to be a problem so far with the iPad. I was considering the Camera Connection kit, but it appears to transfer only pictures and (non-playing) video. Any ideas would be appreciated.