Alert with TableView: (eg: select a wifi network)

Can someone please point me in the right direction of implementing an alert window containing a table view?
The only example I can think of is when you open Safari (without a known WiFi network). This shows an alert window containing a list of available WiFi networks. You can scroll and select one.
Thanks

Hi,
In order to see what i'm talking about do the following:
1) Make sure you have a WiFi Connection
2) Go into WiFi and click the little blue icon next to your connection
3) Select "forget this network"
4) You should now have lost your WiFi connection
5) Make sure your GPRS connection isn't active (modify username / password etc)
6) Open Safari and it should struggle to load the page
7) It will then display an Alert Window containing a scrollable table view where you can choose a WiFi network to connect too.
This is what i'm trying to achieve.
Thanks

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20" Mid 2007 iMac running Mac OS Lion 10.7.4
New 15" MacBook Pro running Mac OS Lion 10.7.4
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Bob,
Thanks for your help. At this point, I'm seriously considering replacing the older "g" AX with a new "n" model. For whatever reason, each time I've tried to bring the ols AX bcak online in my network, it only managed to screw up my network. Using the Airport Utility 5.6 for Lion, I was able to get a green light on the AX, but it still would not go online from my Yamaha digital piano control panel, like it always did before.
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I am not offering a fix other than to say don't use a closed network.
I asy this because having a closed network does not offer any network security. A hacker can easily see your network using tools that anyone can download from the internet. Having a closed network can interfere with the efficiency of all wifi network in your area. As your neighbours may be unaware of your network and start broadcasting on the same channel as you. Then you would both have issues.
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