Of course, WEP doesn't matter in most neighbourhoods, but to be fair if someone really wants access, they'll do anything to get in so Ricksta7 is right, no wireless encryption is 100% secure.
You do get inquisitive people who
think they know a lot and download backtrack thinking they're a hero, but if you're using it on your laptop rather than your main router (which is likely to be on 24/7), you should be fine. I would try to restrict access as much as possible however... just incase
The WEP vs WPA2 scenario is the only reason our DS's aren't connected up... I'm way too paranoid
