QUOTE(tree102678 @ 2-20-06, 6:42am)
Also, how does one make a Wi-Fi connection secure...if there is such a thing....?
Wireless Hot Spots are typically INSECURE (UNSECURE?) NETWORKS. Thus, anybody connected to the hotspot w/ a packet sniffer can easily see what data is being transmitted (including POP3/SMTP e-mail accounts/passwords, IM accounts/passwords, etc.)
If you visit a web site which has an "HTTPS" address, that data is transmitted encrypted (albeit weak encryption).
The simplest way I know of to establish a "secure" connection from an open Wifi Hotspot is to VPN connect to another network (such as back to your home network). VPN connections are secure (i.e. encrypted). This of course requires you to have access to a VPN server. If you own a Linksys WRT54G (v4 or earlier), 3rd party firmware freely available for this router makes setting up a VPN server fairly simple.
Some Wifi Hotspot providers
may offer encryption (WEP, WPA, etc.); however; I've never used one that does.
In short, it's always a gamble when using a wide open Wifi Hotspot. I try not to apply for too many credit cards, mortgages, HELOCs, etc. when on a Wifi hotspot (unless I'm drunk)!

Diggler
P.S. Commercial Wifi Hotspots (i.e. non-FREE ones) I've used have also been insecure. They don't let you access the internet until you've authenticated yourself on an "HTTPS" web page they automatically forward you to (at least the page for collecting payment has always been an an HTTPS page). Methods of authentication can include: credit cart payment, authentication w/ popular Wifi providers (Boingo, T-Mobile, etc.), promotional code/cpn, etc. Once you've authenticated on the Wifi network, your wifi adapter's MAC address is permitted to access the internet.