Last year I was travelling in the US all of january, and needed a dial up connection to the internet. I was not ready to buy a plan at a local host that needed subscription or a monthly fee. I just wanted a host that covered all of the US with local numbers and the ability to pay for an amount of time without registering with an american adress etc..
I ended up using BudgetDialup. And, because I do not bother to scan through all the different companies again, I post it here. Mostly as a reference for myself. For anyone else looking for a easy way to get access to the internet through a dialup connection while in the US, I can recommend Budget. They worked fine and acceptet my norwegian credit card.