OSX will not connect to internet (but bootcamp will) - FIXED

On Snow Leopard 10.6.5

All of a sudden tonight I picked up my macbook pro and tried to browse the web. Nothing. I can connect to my router just fine, and I have the correct router IP, and I can config my router over WiFi, etc. Also, every other device in my house connects just fine. Also, when I boot into Windows 7 it connects just fine - however I get an exclamation in the task bar that says "No Internet Access" even though there is.

I've tried flushing the DNS cache in terminal, no dice. I've cleared my Safari cache but didn't help. A couple times it has actually hit Gmail in all of the testing, but I could not duplicate this. I cannot ping gmail.com, yahoo.com, etc. My gmail notifier will not work, so it's not just my browser.

I noticed the clock was wrong by about 6 hours, so I set it correctly. I also tried putting it back to auto-set another time. Neither worked after reboot.

I'm on WiFi N and G, neither work. I also tried directly connecting to Ethernet, doesn't work. I rebooted the cable modem, router, and mac multiple times, nothing.

I'm at my wit's end. Help!!!

thanks so much for your thoughtful answer and time - however, I just figured it out. Somehow the DNS settings on my router were changed or reset. I plugged in Open DNS IP's again and it works! Comcast's DNS servers must be down. I think most of my other devices are configured manually, but my OSX gets it from the router. Thanks again!

FYI:

http://www.engadget.com/2010/12/05/comcast-internet-down-in-the-midwest-dns-servers-to-blame-again/