I tried that, and it didn't work. I saw on xbox's support forums to try typing in my DNS info from my mac, but that also didn't work. It's making me mad because I had it working before. The info that I was using before was:

IP Address: 192.168.2.2
Subnet Mask: 255.255.255.0
Gateway: 192.168.2.1

Primary DNS Server: 68.105.28.11
Secondary DNS Server: 68.105.29.11