I bought this cable a couple of months ago as I was having trouble 'transcoding' avi files using nero media server to watch movies on my PC through my TV. I checked the back of my HDTV and realised that there was a VGA (PC monitor) port which essentially enabled my TV to be used for my computer monitor.
The cable is thick and robust, which lead me to believe that the wiring inside is thick also and protected from other electrical interference. High quality metal VGA casing for the ports, a very good product.
Buying this cable makes everything very simple, just plug 1 end into your PC (where your monitor cable would usually go) and the other into your TV, your TV now shows everything that your PC would. I have a hi-fi system with 5 speakers connected to my PC which means that sound isn't a problem when watching movies, simple PC speakers may not suffice.
IMPORTANT NOTE: the cable only conveys visual data not sound, so don't expect the TV (or other device) to play the sound from your PC, you have to use something else for this, (like with my hi-fi).