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Thanks for your contribution Trish, but I think, unless that idiot's got two email addresses, you've failed to grasp the thread. There's been one or two comments suggesting caution, which I find fair and constructive, but apart from those there's only been one other contributor who can't seem to make up his mind whether to condemn the concept of a recommendation or moan because I haven't posted it.
Maybe I should've added in my original post that I installed this program a few months ago because I've been pestered with what I now know as trojans for some time, slowing my comp down, making it unresponsive and unreliable. Continual scanning removes some of them, but never the root.
Since its installation everything's as it should be - no further infestation, the computer's faster and more reliable. If anyone thought I'd just installed it without giving it a fair chance of success or failure, that's their problem.