I did download the correct programme and installed it.
It does however contain MALWARE (according to BitDefender Antivirus Plus v.10)
It blocked the installation of Trojan.Dldr.Stration.A which is,apparently, in C:\Programme Files\MzVistaForce\clean_DNS.exe and is a 'High Risk' trojan.
Needless to say, I removed the software.
Not happy that a programme recommended by PCAdvisor contains malware.
Possible that it's a 'false positive' by BitDefender, but I've used it for a few years and never found it prone to false positve detection before.
I am certaintly not taking the risk.
Before I install any new programme, I always create a disk image using Acronis True Image.
Installing the image guarantees you have no further problems.