Quote Originally Posted by uncleelvis
...But using a Web browser returns the "Unable to connect" message. And it's not a DNS issue since the same result occurs when I enter an IP address.

The newer CDs work on our network at work; Web browsing does occur with them. I'm guessing the issue is related to either my network card or router....
Any ideas?
I suspect that you might be running up against an ipv4/ipv6 conflict. This has been discussed in these forums many times before. Using the forum search feature should get you more details.