Santa tells me that my son has a laptop for Christmas but when he opens his present he wont be at home so he wont be able to connect to the wireless router that his dad had a nightmare setting up for him

so he will have to access the internet via his grandmas bt phone line for a few days what is the cheapest dial up provider for him for a few days with no sign up required or could he is there a way he could even get wireless access baring in mind he will be in the country