Yep another plug for WPA. WEP was compromised years ago and any script kiddie with a wireless laptop and a knopplix iso can crack your WEP password in 10 mins (bored nerds drive around neighbourhoods doing this for fun).
Change default router password.
Change default SSID (otherwise people can work out the brand of your router)
Set up WPA.
You'd be suprised how many SSID "linksys" wireless home networks are out there with the default admin password.
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