I have just discovered that there has been a change in the Visa Waiver Program for entry into the States. You now have to apply online prior to arival in the States. Basically you have to fill out that little green form I-94 (the one I always mess up) electronically in the same way as you apply for a visa for entry to Australia. I have not read the main forum for a while, of course, so it may be something that has been covered but it is worth brushing up on if not as it will be important advice for anyone planning a trip to the US