Is here a wireless internet card used for a laptop alone, no other ISP needed? Where can I find one?

Answer:

If you want to bring back free wireless your laptop needs any built-in wireless or you can add a USB or PC Card Wireless adapter to one that doesn't hold built-in wireless, then you entail to find a free wireless network to connect to such as at Starbucks or other urban nouns with free wireless, otherwise you're going to hold to buy a service thru some Internet Service Provider.
You do need a ISP, wheather you use a wireless card on the computer or use a broadband card, its close to having a Cell phone you necessitate a service provider to provide you with the service.