Diagnose and repair network-connection glitches

Reader Sergio Geralnik encountered a mysterious Web-traffic jam:

"My wife's computer suddenly can't hit any Web sites. Any program that tries to communicate via http: using port 80 is getting communication errors. All the other computers using this router and the same Internet connection work fine. I've tried scanning for viruses and malware, but nothing has come up. Any suggestions?"

A step-by-step troubleshooting guide is the top topic in my current weekly WindowsSecrets.com column.

The other items this week include:

• Tracking down the source of XP freezes
  
• What is WSE 3.0, and how did it get on my PC?
  
• How to handle .docx and other "Open XML" files

Access to these items is by a kind of honor-system principle: You decide what the content is worth, and whatever you decide to pay lets you in to *all* the paid-edition content (not just my column) for a full year.

Full info (you start by signing up for the spam-proof free version) here:
http://windowssecrets.com/

Thanks for checking it out!