BleepingComputer.com: Wifi names, etc.

Lets see if i can remember them all, btw, im new here.

I use Wifi all the time. Laptop at home, and i keep the router under the bed.

1. How can i tell who is using the same Wifi network as me?

2. How do i change the Identification my computer uses while on the network?

3. Can i set it to change my ISP every time I log into the network?

4. How can I change the name of my Wifi network, as it would appear on my connection status box? The router is a Linksys, so naturally (I guess) it has 'Linksys' as the default name. I would like to change it to something cool, like 'Goofer' or 'Half-tard'

Thanks.

Some links you may find helpful:

McAfee Wi-FiScan

WPA Wireless Security for Home Networks

Intel's Wireless Network Security Resouce Center