Just spoken to a client who asked which version of internet explorer they were running. Easy I thought - just go to help about or click on the question mark and select about. Well, not so simple if the explorer installation on the client machine has been messed with and you don't see these options.

Fortunately there is another way!

Copy the following line of text:

cmd /k reg query "HKLM\SOFTWARE\Microsoft\Internet Explorer" /v Version

Now click on start and then run (or search programs and files in Vista/Windows 7). Paste the above line into the field and press enter.

You should see a command prompt window open up with a dump of the Explorer version straight out of the registry.