Just got my router running and when I connected to it via my laptop, it didn't ask for a password and it says unsecured connection when I put my mouse over it. Where do I go in the settings? I do not see it at all!
I'd go for WPA2 AES if you can.
But sometimes you have devices that won't work with that...so you'll have to resort to WPA PSK TKIP and WPA2 AES (mixed mode)