Some more things to think ab out
Think of this way you want to protect your house and don't want anyone in so you got to do it the same way for your Wireless...
1. You want to keep it securied as much as possible.
2. Change the Wireless Channel from the default 11
3. Create SSID name but not the same as your network or workgroup
4. Some WR and WAP can disable broadcast of SSID turn that on.
5. Use a login ID for accessing your wireless network alpha/numberic/caps on/off
6. Use MAC address filters manual setup (so users have to be added to your net)
7. Use WEP 128-bit but not HEX on all NIC and WR/WAP also
8. To really get protected you might want to see what the router has assigned for DHCP for each PC, then if you have a feature where you can use DHCP Static IP and create a name for each PC, MAC, static IP and lock now your network even more.
Let me tell you some lobbies in most companies give you free Wi-Fi don't setup your home like the same. If you buddy comes over you should have his MAC address and if you want setup login ID that access your wireless so when he connects he can come right in and login auto. Companies just don't do this you just login and your in!