How to detect a Wireless Internet access point (Legally)

When I am using my new Macbook Pro at a hotel that has an open and free wireless network, what do I do to note that it is there? What do I bring up to be able connect to it?
I was just at a hospital that friends (there) told me had open and free local wireless access but I could find nothing from the Airport icon/window.
Normally, at home, I am connecting through my Airport Extreme which, in turn, is connected to the DSL Router. Once I leave home, that icon, on the batr at the top of the screen, is greyed out.
MacBook Pro 2.16 dual-core   Mac OS X (10.4.7)   Airport Extreme

Frobozz,
You can control (somewhat) the behavior of wireless connectivity through the Network preference pane (in System Preferences), under Airport. In general, with the default settings, the computer will keep track of all of the networks that you connect to and will re-connect to these automatically. When an unknown open network is available, the computer should ask if you want to join it.
If you know that you are in the vicinity of an open wireless network, select the Airport (antenna) icon in the menu bar and the name of the network should be selectable. If there is nothing showing then perhaps the airport card is turned off or needs to be coaxed back to life by re-booting. If you want another method of checking for wireless networks you could download a widget such as Airport Radar from <http://www.apple.com/downloads/dashboard/>.
bd

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