Also, you're going to get a lot faster hashrate if you use stratum mining proxy with the following:

mining_proxy.exe -o stratum.btcguild.com -p 3333 -gp 8333 -q

For Primary and Secondary DNS I would recommend using OpenDNS instead.
Primary DNS: 208.67.220.220
Secondary DNS: 208.67.222.222

Also is your Gateway really 0.0.0.0?

run ipconfig in a command prompt and make sure your Default Gateway actually says 0.0.0.0.