I have an open connection, yet I cannot connect?

I really need help! I've searched and searched...I had a connection about a week ago, then i came home, and nothing. I've spoken with the ISP and they're thinking it's a software based problem (I'm using Vista x64). The connection does work, since I've tested it out on my 2nd HD. I can ping out using under CMD under Vista, no failures. I'm using IE7 and Firefox. The "find/fix problem" link under IE doesn't work and it states that there is nothing wrong with the connection. Firefox usually crashes!?! I really do no know what is going on here. Some others have said to manually set my IP, but it's not taking it - or I'm not setting the correct one. Oddly, there is no IP address listed under ipconfig/all. There is however IPv4 and IPv6 listed. I'm not really sure if that's just an updated version of the same thing on Vista or not. I'll be willing to post my ipconfig, event viewer, screen caps, etc. I cannot find the answer anywhere on this problem and I could really use the help.

Thanks!

g-paw.

I've tried that. I re-did this after your post. I get nothing. How can I ping out to a website and get no drop, and yet cannot connect to the internet?

I used this exact setup on XP(2nd HD) and it's working fine. I've even used the IE7 on the Vista HD with XP to see if anything happened. It worked fine too, so it's not the software. Any other ideas?

I have ran into lots of problems with IPv6 not working correctly. I have always uninstalled it and most of the time the problem is fixed.

Go into your browser and type "64.233.187.99" minus the quotes. If you get website not found, you're not getting the default gateway address, DNS, and private IP assigned from your router.

Another way to test this theory is to plug the modem directly into the PC (after power cycling the modem, of course) and seeing if you get an internet connection.