Wireless Help

i am a very newer for linux, but very upset for windows, so just now i try to move onto the linux, the notebook is dell 630m, SUSE Linux Enterprise Desktop 10.1 , i am amazing the setup is very friendly.

all the hardware were recognize, but some problem happened on wireless, i can saw the wireless card detect some wireless network including mine, but when i choose one to connect, but it couldn't connect. looks no problem, but i don't know why, so can someone do some favor? thanks in advance.

btw: i setup the wireless router security by mac address. the wireless card: intel 2200BG

after restart the system, the problem fixed. i have no idea about why it happened.

i didn't think i changed any configuration. anyway, thanks, begin to enjoy suse