Wireless access points are everywhere, I'd wait until you got there before saying there aren't any around. Anyway, I looked at "T-mobile to go" and the prices are a lot better than last time I looked, which is nice, but they have something called a SideKick deal where you pay $1 per day for unlimited browsing. That means browsing on their PDA like device, so maybe you can use your GPRS phone to make the connection to the network, then bluetooth the phone to your laptop. Maybe the flying school will let you connect, who knows until you ask.