Ok, so I ended up moving houses, but still with same cable company. My router has worked before at the old house, but since I started using wireless more on the same router none of my ports are open. I've tried everything, static IP, DMZ, opening ports, etc.
I used this site to check my ports and none of them work. http://www.canyouseeme.org/
torrenting completely sucks without NAT working. Router is a Buffalo WZR2-G300N (which has worked before even in wireless). Windows XP also.
What other steps can I take to try and get it to work? I'm going to see if I can get the modem connected directly to my computer later, but anything else I could check?