Thank you for such a thorough and comprehensive reply
Having experienced the same problem I am going through your instructions. However I have come up against a brick wall!!!
How do I run DDS.scr?
Douple-clicking on it does nothing. Looking at the file associations it is labelled as a Screensaver with no associated application. I read elsewhere that scripts are run through Wscript.exe in the System32 folder, but assigning WScript .exe to this file results in a message: 'No script Engine for .scr type files'. In another message board I was instructed to download a .reg file containing many changes to the registry (which I am reluctant to run!).
This all sounds like major work just to run a script.
So, the question remains - how do I run DDS.scr?
I am running Windows 7 Ultimate 32 bit.