I cant connect to the. i cant connect to the net through my wireless mini pc card but i can use my

Question

i cant connect to the net through my wireless mini pc card but i can use my lan and get the net my windows config just keeps searching for the connection but is displaying no ip address for my wireless and when i try to go to the settings for my wireless router it asks for a name and password but when i enter mine it doesnt let me on to change the settings plz help me