Missing Properties Box in Windows 2000

I have developed a small problem on one of my workstations running Windows 2000 with SP 3.0 installed. After opening My Computer, right clicking on the “C” drive, (or anything else for that fact), and selecting Properties, nothing happens. No properties dialogue box, nothing. The same thing happens if I select a folder or a file further down the directory structure. No luck using File/Properties from the menu bar.

Has anyone else encountered a similar problem? Anybody have any suggestions asto where I should start looking?