First up, Is there a way to see who's connected to my wireless network? All I know to do is hit CNT+ALT+DEL and look at users.
Which wireless AP/Router you using? I'm using the WRT54G and all I had to do was to go to 192.168.1.1, click on status, Local Network, and then DHCP Clients table.
I've also set 64-bit encryption Enabled MAC filtering, and changed the WEP key. But I've heard to make the SSID unique...why? Doesn't this make you stand out? And i've figured that 128bit encryption still has 8 bits to use that differ just the same as 64bit...so I'll stick with it.
You should make the SSID unique so that you don't get leeched from people who connect to defaulted SSIDs. Like if someone's wardriving, they can switch to different default SSIDs from major companies or common ones, like "linksys" "netgear" "home" "office". And since you've disabled broadcasting, people can't pick it up automagically.