The wirelless network connected - but no internet

hi, I'm sorry for lot's of thopic's that i made, but i have the new problem, now I can connect to the wirelless network, everithyng is fine, but when I'm trying to enter the web, i simply can't...and i also can't acess my home network.( but if I'm connecting throu the cabel everything work's fine). Please can someone help me with this problem...?

You have not set up the wireless router to obtain an IP address. This should be set to automatic. Read through your manual, or run the setup once more, reading carefully