Whenever you have a problem visiting a website or accessing the internet in general it is always a good idea to start by using another browser, such as Firefox, to determine if it is a problem with Internet Explorer or something else.
With that particular site the first thing that jumps out at me is that you are automatically taken to a secure website and given a session ID. It could be that IE's settings have been modified to disable SSL support, or that the required files have become corrupt, the latter of which would affect all browsers. Thus, give Firefox a try to narrow down the field of possibilities.
Let us know.
P.S. For one other possibility, what internet connection do you have?
I am able to open all web sites except one. When I try to open site www.argus.bm , I get a message that the page cannot be displayed. I used to be able to open this site and I can access it from a different PC with no problem.
I used the command regsvr32 to register most of the .dll files as recommended by Microsoft but I still have the problem.
I have XP SP2 and have even used a registry cleaner but the problem has not been resolved. Would you recommend re-installing IE6 or upgrading to IE 7 ?
I would appreciate any help that you could give me.