Your question is rather obscure, but I´m reading that you want to set your laptop up to be able to get a wireless connection anywhere in Europe, Asia or US. I just moved back to the US from Europe, so can help you if I´m reading you right.
There´s no ISP that would have the range to connect you without some additional special equipment. However, if you choose a pc card that is compatible with the wifi standard (just check the card on the internet), you will be able to connect with the vast majority of hot spots and coffee houses in Europe at least, and I assume asia and the US.
The last time I checked prices at an internet cafe in Barcelona, it cost about 4€ per hour to connect...prices vary from country to country and in different cafes...
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