problem connecting to WiFi network with my PB

I have it set up with WP2/AES and it doesn't want to connect with that... There was an error joining the AirPort network "X" when i use my iPhone it connects fine...

I have a PB G4 1.33 with an Airport Extreme card with firmware version 405.1 (3.90.34.0.p18)

is it a problem with compatibility? doesn't it support WPA2? I've tried WEP and WPA and it works.

strange thing though when i try to connect to it the window says WPA personal and not WPA2 personal? even though when i chose other network it gives me the option of choosing WP2 personal in the drop down menu?

BTW my router is a D-link DI-624 with the latest firmware installed

 

Did I post this in the right place?