At my house, we have Wi-fi with three computers, two PCs and one Mac. On the
Mac I can gain access to a web site (The Oildrum.com). However, when I try
to access The Oildrum.com webpage from the other two machines, i.e., from the
PCs, I get the message: "Internet Explorer cannot display the webpage."
What do I need to do to fix this problem, so that I can gain access to
that particular web site from all of the machines in my house?

No one can give you specific help when you don't state your version of
Internet Explorer and Windows.

If you have IE 7, this is frequently caused by an incompatible browser
add-on. The troubleshooting steps described below will help you to
diagnose and fix the problem:

How to Optimize or Reset Internet Explorer 7
http://support.microsoft.com/kb/936213/

(Give the Guided Help a try.)

Problems with Internet Explorer can also be caused by the presence of
viruses or other malicious software.


---
Leonard Grey
Errare humanum est

PJ wrote:
> At my house, we have Wi-fi with three computers, two PCs and one Mac. On the
> Mac I can gain access to a web site (The Oildrum.com). However, when I try
> to access The Oildrum.com webpage from the other two machines, i.e., from the
> PCs, I get the message: "Internet Explorer cannot display the webpage."
> What do I need to do to fix this problem, so that I can gain access to
> that particular web site from all of the machines in my house?