Start any Windows Accessory program such as paint or calculator and open the programs help dialog by pressing [F1] or the menu item 'Help | Help topics'. Right click on the title bar in the Help window and then select the context command 'Jump to URL'. Enter the complete web address in the subsequent dialog as 'http://www.websitename.com' and click OK. This should bring up the desired website on the right window pane. You can now navigate through it using the context commands, accessible by right clicking on the website pane.
The process is visually represented with some screen-shots from my own PC as follows,
Here's the desired website(as follows) which was opened without the help of any web browser.
NOTE: Calling up websites via the Windows Explorer uses Internet Explorer in the background and is thus not a way to access restricted websites.
Written and posted by:- M.Abhiram