Wireless ISP

I will be moving to the coast of Nicaragua next month and am hoping to be able to be on line from there. There are a number of wireless ISPs there so service should be available. My problem is I have no idea (DUH) what my puter set up needs to have to get connected. I am a wireless dummie.Can anyone tell me what to use in a laptop so I will be ready to get conected when I get there?

shoulda posted this in the "Internet, Networking & Security" section.

I have microwave wireless, the only special equipment I have is the antenna, a wireless bridge (both supplied by the ISP.) From there the connect into your network, or if you're a single PC they connect using your networking card.