try directly typing the address of your router. Should be something like
http://192.168.2.1 or something like that. Should be in the manual of that router.
There, you select security key. Usually WTA(better) or WEP(more commons for non-PC applications, like Wii, PSP, Nintendo DS...)
And then you should be safe

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Masterdo
Back to some hardcore grinding, as soon as I have time :p
Ranger lvl 63. Council member.