Okay, So you're not getting an IP address with your wireless connection. Just going to start from the beginning. Have you restarted your computer? If so try setting a static IP address. This link might help:
http://www.dslreports.com/faq/2725
You're going to use the following info:
IP address : 192.168.0.149
Subnet Mask : 255.255.255.0
Gateway / Router : 192.168.0.1
You can set the DNS to the same as your gateway as it should be giving you DNS.
After that disconnect the ethernet wire and give it a try.